This professional quality 29 Pc 135 Degree Split Point, M35(HSS+5% Cobalt), 1/16" - 1/2" by 1/64" Jobber Drill Set comes in a strong durable protective plastic case. Equipped with 135° split point for fast penetration and accurate hole starting without the need of a center punch. Drill bits Retain hardness at high temperatures and lasts 12x longer than standard 118° point drill bits. With the aggressive angle these cobalt drills bits not only last longer while drilling but also cut faster than standard high-speed steel bits. It's ideal for drilling cast iron, heat-treated steel, stainless steel and other hard materials. Set includes: 1/16"-1/2" by 1/64". Features: 135° split point for fast penetration and accurate starting with no punch. Retains hardness at high temperatures. Lasts 12x longer than standard 118° point drill bits. With aggressive angle these cobalt drills bits not only last longer while drilling but also cut faster than standard high-speed steel bits. It's ideal for drilling cast iron, heat-treated steel, stainless steel and other hard materials. Set includes: 1/16"-1/2" by 1/64". Strong durable protective plastic case.