Welcome to EB-TOOLS-PRO Buy from EB-TOOLS-PRO and you will receive fast free shipping and 24/7 technical support. I have been selling on eBay since 2008 with a 100% positive feedback so you can buy with confidence when you buy from EB-TOOLS-PRO. Dent Fix DF-1600K 6 1/2 Drill Bit Extension Kit When access is limited or obstructed either by a structural member or other component, we have a solution…“The Extender” is a spot weld drill bit extension that adds 6½ inches of length, letting you get to those deep and hard to reach spot weldsThe plastic sleeve protects any nearby structures from damage & cables from getting tangled. You can stabilize the drill point by holding here.Works with any 3/8” drill. Recommended not to exceed 1800 rpm.Includes our DF-1480 8 mm HSCo drill bit.Accepts any of our spot weld drill bits:DF-1480 8mm HSCo Spot Weld Drill BitDF-1680T 8mm Titanium Coated Spot Weld Drill BitDF-1610 10mm HSCo Spot Weld Drill BitDF-1610T 10mm Titanium Coated Spot Weld Drill Bit