30505 Model Code: AK - Price is for 1 Bit (part# 30505) This item features: -Tough metal drilling, made for drilling into hardened steel bolts for creating pilot holes for screw extractors. -8pct Cobalt alloyed for higher heat and abrasion resistance. -Shorter drill for additional strength. -Heavy-duty web construction for strength and durability. -Cutting Edge Material: HSS-E (Co-M42). -Finish: Gold Oxide. -No. of Flutes: 2. -Point Angle: 135 . -Point Shape: Split Point. -Shank Type: Cylinder. -Spiral Angle: CCW. -Structure: Solid. -Type: HSS Drill Bit. Len. = Overall Length Len. = Overall Length Model Code Model Description AACutting Diam:1/2 in, Flute Length:2 7/8 in, Overall Length:6 in ABCutting Diam:1/4 in, Flute Length:1 3/4 in, Overall Length:4 in ACCutting Diam:1/8 in, Flute Length:1 1/16 in, Overall Length:2 3/4 in ADCutting Diam:11/32 in, Flute Length:2 1/4 in, Overall Length:4 3/4 in AECutting Diam:13/32 in, Flute Length:2 1/2 in, Overall Length:5 1/4 in AFCutting Diam:15/32 in, Flute Length:2 3/4 in, Overall Length:5 3/4 in AGCutting Diam:19/64 in, Flute Length:2 1/16 in, Overall Length:4 3/8 in AHCutting Diam:3/16 in, Flute Length:1 1/2 in, Overall Length:3 1/2 in AICutting Diam:3/8 in, Flute Length:2 3/8 in, Overall Length:5 in AJCutting Diam:5/32 in, Flute Length:1 1/4 in, Overall Length:3 1/8 in AKCutting Diam:5/64 in, Flute Length:1 in, Overall Length:2 in ALCutting Diam:7/16 in, Flute Length:2 5/8 in, Overall Length:5 1/2 in AMCutting Diam:7/32 in, Flute Length:1 5/8 in, Overall Length:3 3/4 in ANCutting Diam:7/64 in, Flute Length:1 in, Overall Length:2 5/8 in AOCutting Diam:9/32 in, Flute Length:2 in, Overall Length:4 1/4 in