The Colt and Riss "TwinLand" line of brad-point drill bits offer a high-quality, yet economical, alternative to the more costly brad point bits. Upon close inspection these bits have a slight relief milled in the land (flat area between the flutes) to create 4 lands rather than 2. This "TwinLand" design has two major advantages over other conventional bits. The two closely spaced lands of the "TwinLand" bits clear chips more effectively, keeping chips from clogging the lands and generating friction which can burn the hole. The second advantage is that the two lands offer more support to the sides of the bit, allowing the bit to drill straighter even with a hand-held drill. The flutes are roll forged and the cutting tips have been diamond ground to stay sharp and last longer. Bits have 3/8" or smaller shanks. Fits all 3/8-Inch and larger drill chucks.
Set includes 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, and 1/2-Inch diameter bits. Set comes in vinyl pouch. These quality bits were made in France.
