supply of drills guage straight shank wire size 1 to 60 with guage type and capacity - precision flat plate gauge designed for checking and identifying straight shank number-sized (wire gauge) drill bits. must contain exactly 60 precisely machined sizing holes corresponding to standard number sizes 1 through 60. material and hardness - manufactured from heavy-gauge, rust-proof stainless steel or hardened tool steel to ensure long-term dimensional stability. (flimsy aluminum, plastic, or soft mil