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Bosch HB25M Bi-metal 25-Piece Hole Saw Master Set

by Bosch
4.5 out of 5 stars 45 customer reviews
| 8 answered questions

List Price: $181.21
Price: $79.99 & FREE Shipping. Details
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  • Enter your model number above to make sure this fits.
  • Set contains 11 hole saws measuring various lengths
  • Includes seven adapters 1-1/4-inch to 6-inches
  • Also includes four adapters measuring 9/16-inch, 1-3/16-inch and 3/8-inch
  • Also includes a mandrel
  • Finally it includes a 3-3/8-inch pilot bit and washers
  • Set Contains: (11) hole saws: 7/8-inch, 1-inch, 1-3/8-inch, 1-1/2-inch, 1-3/4-inch, 1-1/8-inch, 2-inch, 3-inch, 2-1/8-inch, 3/4-inch and 2-1/2-inch
  • (7) adapters 1-1/4-inch-6-inch;
  • (4) adapters 9/16-inch-1-3/16-inch; 3/8-inch mandrel; 3-3/8-inch pilot bit; washers
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12 new from $79.99
$79.99 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Bosch HB25M Bi-metal 25-Piece Hole Saw  Master Set
  • +
  • Bosch Daredevil DSB5013P 13-Piece Spade Bit Set
Total price: $107.38
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Special Offers and Product Promotions

Color: NA

Product Description

Color: NA

Product Description

A complete assortment for general-purpose applications. Quick Changeâ"¢ mandrel (PCM38) with two pilot bits (HB85PB). Four small adapters (AN01) and seven large adapters (AN02). Hole saws: one 3/4, one 7/8, one 1, one 1-1/8, one 1-3/8, one 1-1/2, one 1-3/4, one 2, one 2-1/8, one 2-1/2 and one 3.

From the Manufacturer

Easy quick change and simple plug removal. Now you can work faster - and smarter - using our patented Quick Change Universal Hole Saw System. Its revolutionary design and our universal mandrel works with any brand of tool or hole saw to let you change saws in seconds. The expanded family of Bosch hole saws now includes new carbide multi-material and sheet metal saws.

Product Information

Color:NA

Technical Details

Part Number HB25M
Item Weight 6.4 pounds
Product Dimensions 12.1 x 10.3 x 5.4 inches
Item model number HB25M
Color NA
Finish NA
Item Package Quantity 1
Batteries Included? No

Additional Information

ASIN B000WA4XCY
Customer Reviews
4.5 out of 5 stars 45 customer reviews

4.5 out of 5 stars
Best Sellers Rank #34,057 in Home Improvements (See top 100)
#24 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Power Drill Parts & Accessories > Hole Saws & Accessories > Hole Saw Sets
Shipping Weight 6.4 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available September 14, 2004

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Reviews

Top Customer Reviews

Color: NA
I'm loving this system! I've been using mine for a number of months -- maybe a year -- after becoming frustrated changing the traditional thread-in arbors when switching between sizes. As you're probably aware, the threads tend to tighten with use, making removal ridiculously difficult. And then there's the matter of slipping pilot bits.

Bosch's system does away with all of that, and this kit was a pretty cost-effective way for me to get started, along with a package of Bosch CK2 Quick Change Conversion Kit to convert some of my other hole saws made by the likes of Lenox, Milwaukee, Ridgid and Vermont American.

And that's the beauty of this system: just about every hole saw I've come across at my local hardware stores will work with Bosch's system. All I need is a Bosch adapter -- each of which cost less than three bucks -- and the saw is ready to work with Bosch's mandrel and pilot bit.

Bosch even makes a SDS version of the mandrel, so my collection of hole saws can quickly be switched between regular and SDS drills.

The pilot bits are also quick-connect hex ends, and they simply pull out / click in to place, with no loosening or tightening necessary. This allows me to easily change between wood and masonry bits, depending on the task at hand.

Removing wood plugs is a cinch. If one becomes stuck, pull the collar of the mandrel to release the saw, then use the pilot bit to gently (but quickly) pop the plug out. It's way easier with the pilot bit removed.
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Quick change concept is convenient, no doubt, but there is a usability issue a buyer should know about:

The quick change mandrel limits the holes depth for the smaller hole saws. This is due to the fact that the mandrel has bigger diameter than the saws and the hole depth can be as much as the saw length, not more - it simply prevents you from drilling deeper. This is quite an issue if you plan to drill the side holes (7/8"[22mm] or 1"[25mm]) when installing door locks. These holes are deeper and you need some sort of an extender or longer adapter to be able to drill them with these saws (not sure if BOSCH has such thing, if somebody knows, please tell). Some may say that you shall not drill a deeper hole than the saw anyway. But buy removing the cut-out core you can go deeper. Well, with the smaller than the mandrel hole saws in this set you can't.

TIP: Hold the saw when you release it from the mandrel, otherwise the spring can launch it and when dropped on a hard floor the saw can brake a tooth or you can chip a tile (and no, this didn't happen to me :).

Otherwise these hole saws are quality made, nicely boxed and can serve you a long time if properly cared after. These are primarily for metal drilling and if used on any type of wood, plywood, MDF, etc. be careful not to preheat them - they can be easily burned and damaged.
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Color: NA Verified Purchase
Fantastic hole saw set. We use these every day for our plumbing business, and the ability to quickly change out the bits is the best feature. The quick disconnect bits also make
the plug removal from the saw a lot faster.
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Color: NA
The Bosch hole saws last as long or wear out as quickly as those from any other company. One of our workers bought one of these kits based on the Bosch reputation. Bosch makes the best concrete drilling tools but for wood and OSB and other tough building materials the bi-metal are a very poor choice and death to cordless drill batteries.

The case is not the worst but not as well done as the Milwaukee cases. There is an extra compartment for extra drill bits which is helpful and better than having them rattling around in the case. It is not as strong as the cases for the Milwaukee and Blue Boar kits we have and not likely to survive a fall on concrete.

The kit is also limited on the largest size hole saw that it will hold. If you want a larger hole saw or want to add a couple sizes of carbide grit or diamond hole saws there is no space.

For the DIY homeowner wanting to have a variety of sizes at minimal cost and where the number of holes needed is very small and the 3-5 minutes to get the cut plug out is not a problem, this kit is worth considering. It costs about 50 cents to manufacture a bi-metal hole saw and they all use high speed steel so no benefits to buying any well made bi-metal hole saw, only to avoid the poorly made ones with a large weld seam on the side.

Personally I would instead buy a quality TCT large teeth hole cutter set and add one or two bi-metal for metal and carbide grit for wall tile on an as needed basis.

Blue Boar Master Combo Kit-11 Sizes MEGA Nail Tough Deep Cutting Tungsten Carbide Hole Saws. Cut 10x Faster, 3x Larger, 40x more holes using cordless drills. Ideal for wood, MDF, Particle board, Hardie board. Deep slots for fast plug removal
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Bosch HB25M Bi-metal 25-Piece Hole Saw  Master Set
This item: Bosch HB25M Bi-metal 25-Piece Hole Saw Master Set
Price: $79.99
Ships from and sold by Amazon.com
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