4pcs Portable Countersink Drill Bits Set, made of high speed steel 4241, is ideal for drilling shallow or deep holes in a variety of materials including steel, brass, wood, plastic, and much more. The drilling length is adjustable for meeting your different needs during operation. Thanks to its ergonomic design, it is comfortable to hold and easy to operate. It requires no pilot hole, quite convenient and easy to operate. A practical tool for drilling! So, no more hesitation!<!--Features --><p>FEATURES</p><UL><LI>Four-piece set includes bits for drilling pilot holes for screw sizes 3mm, 4mm, 5mm, 6mm</LI><LI>Special designed steel counter sleeve countersinks or counter bores pilot hole</LI><LI>Adjustable counter sleeve depth with wrench</LI><LI>Drill and countersink for wood screws without changing bits</LI><LI>Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew</LI><LI>Chamfer is 5 flutes, in the process of using, can discharge the wood more rapid, sink hole disposable drilled smooth, screw cap perfect embedded in the surface of workpiece</LI></UL><!--Specifications --><p>Specifications</p><TABLE class=ke-zeroborder border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD width=131>Chamfer Drill Body Material</TD><TD width=365>Steel #45</TD></TR><TR><TD width=131>Material</TD><TD width=365>High Speed Steel 4241</TD></TR><TR><TD width=131>Dimensions</TD><TD width=365>(4.33 x 2.75 x 1.18)" / (11 x 7 x 0.3)cm(L x W x H)</TD></TR><TR><TD width=131>Weight</TD><TD width=365>4.14oz / 117.5g</TD></TR><TR><TD width=131>Chamfer Diameter</TD><TD width=365>0.62" / 1.58</TD></TR><TR><TD width=131>Shank</TD><TD width=365>1/4 Hex Shank</TD></TR></TBODY></TABLE><!--Package Includes --><p>Package Includes</p><UL><LI>4 x Countersink Drill Bits</LI><LI>1 x Hex Shank</LI></UL><!--Extra Info --><!--produts_compatibility -->