3/8" Drive Locking Extension 3". Locking mechanism retains accessories in place preventing accidental release. Slide button design for the sure retention of accessories. Nickel chrome high polish finish for long tool life. Heat treated drop forged alloy steel for strength.
From the Manufacturer
GearWrench 81250 3/8-Inch drive locking extension, 3-Inches long. Locking mechanism retains accessories in place and prevents accidental release. Use these extensions to access hard to reach areas. Features slide button design for the sure retention of accessories. Extension is made from heat treated drop forged alloy steel for tool strength and high polish nickel chrome finish provides corrosion resistance for long tool life.