ITEM NAME:1/2" Straight Shank 30mm Split Point Tip HSS Twist Drill Bit B2Z4 1/2" Straight Shank 30mm Split Point Tip HSS Twist Drill Bit B2Z4 Excellent for drilling on both flat and curved surfaces such as stainless steel and cast Iron. Straight shank design is more suitable for many electric drills (here is not included). Sharp and twisted flute will make the drilling be more easy and effortless. Split Point tip starts on contact to keep the bit from walking for fast accurate holes. Product Name : Twist Drill Bit Design : 1/2" Diameter Straight Shank Material : HSS Shank Diameter : 13mm/1/2" Drilling Diameter : 30mm/1.2" Flute Length : 78mm/3.1" Total Length : 155mm/6.1" Color : Black Weight : 389g Package Content : 1 x Twist Drill Bit Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.