Jerax tools 12 78 138 Step Drill Bit Set Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel Copper Aluminum WoodPlastic

M2 HSS Cuts A LOT MORE CLEAN holes and much EASIER than average step bits In general M2 has 50 more Tungsten and 150 more Molybdenum both of which are key elements in improving durability Our additional Vacuum heat treatment and Nitride surface hardening treatment make the performance even better Nonstop Our Polished Steps and Size Highlights let you able to see target hole size during drilling No need to stop in the middle of the drilling and check Save you time and hassle Easier Faster Cleaner With our highaccuracy CNC processing and several optimized design details over the years our design cuts EASY FAST and CLEAN outperforming the average ones on the market Heavy duty Cuts holes on Stainless steel Hardened Metal Mild steel Galvanized steel Aluminum Copper Plastic Wood or anything that has similar or lower hardness as these materials Up to 12ga 27mm thickness for Stainless steel.