Straight Groove Step Drill Bit HSS Titanium Coated Wood Metal Hole Cutter Core Drilling Tools Set 4 Models

Use : Metal Drilling Material : High Speed Steel Model Number : HSS Step Drill Bit DIY Supplies : Woodworking Type : Core Drill Bit Origin : Mainland China Certification :CE Package 1 : 1pcs 3-12 Step Drill Bit Package 2 : 1pcs 4-12 Step Drill Bit Package 3 : 1pcs 4-20 Step Drill Bit Package 4 : 1pcs 4-32 Step Drill Bit Package 5 : 3-12 4-12 4-20 3 in 1 set Package 6 : 4-12 4-20 4-32 3 in 1 set Package 7 : 4-12 4-20 4-32 3 in 1 box

1: High Speed Steel 2: Metal Drilling