HSS-Co M35 Cobalt Step Drill Bit 3-13mm 1/4 Inch Hex Shank Woodworking Bits

Features: *Applicable range 0.1~1mm steel plate; 0.1~4mm iron, aluminum, copper and other metal plates *Step structure, drill bit can have multiple specifications *Efficient and durable, no need to apply center punch, more durable than general drill *Deburring, chamfering, opening round holes *High-end plastic packaging *Precautions: 1. High temperature will occur during work, need to add water or coolant to cool down 2. It is recommended to use a bench drill if the thick-ness of the plate exceeds 1mm and the hole diameter exceeds 14mm Specification: *Name: Double-Edged Spiral Groove Ladder Drill 3-13mm *Color: As Pictures Show *Material: M35 Cobalt *Size: 77*47*6.35mm (Approx.) *Quantity:1pc Package Included: 1*Step Drill Bit Note: 1.Transition: 1cm=10mm=0.39inch. 2. 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. 3. Please allow slight manual measurement deviation for the data.