Twice as long as regular chuck keys, you'll now have easy access to adjust your larger jaws. Ideal for use with any chuck with Jumbo Flat Jaws and/or Extension Jaws mounted. 8" Square Key for 3/8" hole
Reviewer: Bruce McCorkle (Marysville, WA)
Submitted: 2.2.2010
Needed one of these, since the 8" jaws came out. Works just as advertised. This should be the standard, instead of an extra when buying the chuck kits.