The DEWALT DD5155 IMPACT READY 5pc Titanium Drill Bit Set is designed for Metal or Wood. These bits are ground from solid 1-piece design and is up to 5 times more durable than the current 2-piece conventional product. The patented web taper increases the rigidity of the bit to decrease the potential for bit breakage and the patented pilot point tip allows users to drill holes faster than the conventional split point product and offers clean burr free holes with reduced bit walking. Common users include electricians, HVAC, mechanics, glaziers and GC's. These drill bits feature a 1/4" Hex shank. Set includes: (2) 1/8-in, (1) 5/32-in, (1) 3/16-in and (1) 1/4-in drill bits.FeaturesPatented web taper increases the rigidity of the bit to decrease the potential for bit breakageProp 65YesIncludes1X DEWALT Impact Ready Titanium Nitride Coated Drill Bit Set, 5Pc Bit Type: Impact Length: 3.880 in Height: 6.750 in Width: 0.250 in Weight: 0.150 lbs Shank Type: 1/4 in Hex Material: Solid 1-piece Coating: Titanium Nitride Country of Origin: Thailand