Irwin Lock-n-Load Quick Change Extensions 7/16" X 12" Electrical Boxes & Accessories One hand operation auto latch

One hand operation auto latch

Carbide tip

patented variable tooth technology provides faster cuts with less vibration

Carbide-tipped spiral bit with WILD BOAR multi-cutter x-head has 4 chiseling faces and cutting edges for more efficient drilling

For Concrete & Masonry Drilling

Irwin Lock-n-Load Quick Change Extensions 7/16" X 12" Electrical Boxes & Accessories One hand operation auto latchLock n Load Quick Change Extensions Features: Carbon steel construction sleeve and body for durability and life Lock n Load system for one handed quick release Patented jaw design holds bits securely on 6 flatted shanks, as well as ball detent bits 1 4" Quick Change range now holds insert bits; magnetic for holding