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Description:M3-M10 6pcs 1/4" Hot Composite Tap Thread Spiral Screw HSS Screw Drill Bit Specifications:Product NameHSS Screw Drill Bit Style#1: 4341 Six-piece Set Natural#2: 4341 Six-piece Set Titanium PlatedMaterialTitanium PlatedLengthM3 Length:  6.6cm / 2.5" M4 Length:  6.7cm /..

Specifications:MaterialCutting Head: YG6 Cutting Body: 45# carbon steelCutting Angle String82 Degrees(A°) Angle49°(B) Cutting height3/64"-3/8"(D) Diameter3/8"(D) Shank1/4" hex shank(L) Overall length2"-5/8" Feature:▲ An adjustable, heavy-duty, revolving depth-stop with a strong thrust ball bearing f..