Countersunk Drill Bits Set Tools Drilling Equipment Accessories Useful

Features: *5Pcs/set Hex Shank Drill Bit Set Screw Countersunk Drilling Reaming Tools *100% brand new and high quality *Made of high speed steel 4241 the surface is titaniumized and durable *Quick-change hex shank design for easier installation and unscrewing *Can drill the screw hole and the counterbore with nut at the same time and keep the two on the same axis *Suitable for drilling machines with chucks or joints *Great for workpieces with hardness below 25HRC such as carbon steel thin iron plate insulation board PVC board wood board etc. Specifications: *Material: Drill Bit: HSS 4241 Black Chamfe: Carbon Steel *Color: As Pictures Show *Size (Approx): 5#: 1.98mm 50 mm (length) 6#: 2.38mm 55mm (length) 8#: 2.78mm 60mm (length) 10#: 3.175mm 63mm (length) 12#: 3.56mm 65mm (length) *Shank: 1/4 hex shank 6.35mm *Quantity: 5pcs / set Package Contents: 1 Set of Drill Bits (5pcs) Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.