Ok great you just got some new wheels for your board but your getting crazy wheel bite (wheels rubbing against they board during turns) so you go out and buy some spacers or pressure bushings. So you go to install your spacers, only to realize that your hardware isn't long enough. Well that's where longer hardware comes in. There aren't many differences when it comes to hardware but if you need that extra clearance this is the way to go.
My son has several skateboards and longboards which he works on frequently. He always needs hardware, and this product made a great, inexpensive stocking stuffer for him this holiday. Will probably re-order before long. Great shipping, too.