Joernso 10mm Durable Countersunk Wood Aluminium Alloy Screw Step Drill Woodworking Tool

Specifications: This is the perfect woodworking tool for hole opening and countersinking of wood and aluminium alloy screw. The drill head is made of high hardness YG8 alloy which is wear resistant. It has long service life convenient and easy to use. Item Name: Step Drill Material: YG8 Alloy (Drill Head) 45# Carbon Steel Treatment: Plastic-sprayed Surface Features: Durable Easy to Use Woodworking Tool Size Details: 2.8*10: Shank Diameter: 10mm/0.39 Blade Diameter: 2.8mm/0.11 (Approx.) 3*10: Shank Diameter: 10mm/0.39 Blade Diameter: 3mm/0.12 (Approx.) 3.2*10: Shank Diameter: 10mm/0.39 Blade Diameter: 3.2mm/0.13 (Approx.) 3.5*10: Shank Diameter: 10mm/0.39 Blade Diameter: 3.5mm/0.14 (Approx.) 4*10: Shank Diameter: 10mm/0.39 Blade Diameter: 4mm/0.16 (Approx.) Notes: Due to the light and screen setting difference the item s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Step Drill