1/4 Nut Driver Bit Set Hex Magnetic Metric Impact Drill Socket Set 5 To 19mm. Metal Drilling 160-400mm Extra Long High Speed Steel HSS Twist Drill Bits Bit UK. 200mm Extra Long High Speed HSS Steel Twist Drill Bit Set For Metal Drilling UK. 7PCs Hex Self Centering Hinge Drill Bit Set Hardware Pilot Hole Door Window Tool. 90mm Extra Long Forstner Drill Bit Boring Hole Saw Cutter Carbide Tip 16-35mm UK. 12Pcs 6mm Diamond Drill Bit Porcelain Tile Ceramic Glass Marble? 30-125mm TCT SDS PLUS Core Drill Bit Hole Cutter For Concrete Masonry Brick. 1/4 Hex Socket Bit Adapter Set Hex Impact Drill Nut Bits Driver Bar Wrench UK. 89 YG6 Solid Carbide Stub Length Twist Drills Bit Jobber Drill Bit Precision Ground Hardplate For ALL STEEL Stainless Steel Metal. Stub length (aka Mechanics length): Shorter than jobber drills, mechanics length drills are named as such because they fit into tighter spaces and are less likely to break while still allowing a reasonable flute length. YG6 Solid Carbide (aka ISO K20), which density is about 14.5-14.9 g/cm3. The hardness of it is about 89HRA. No Center Punch Need. The 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not “walk” or “wander”. Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks. Must be used and operated at proper RPMs for maximum efficiency. Material: YG6 Solid Carbide Hardness: HRA. 89 Density: 14.5-14.9 g/cm3 Bending Strength:1380N/cm2 Impact toughness:Approx. 2.5J/cm2 Shank Type: Round Shank Diameter:1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm Length Type: Stub Length(aka Mechanics Length) Size Detail:As The Picture Show. SET A 6Pcs (1-6mm)=1mm, 2mm, 3mm, 4mm, 5mm, 6mm. SET B 5Pcs(2-10mm)=2mm, 4mm, 6mm, 8mm, 10mm. SET C 13Pcs (1-13mm)=1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm. YG6 Solid Carbide Stub Length Twist Drill bit.