in 1 Drill Bit Set: Tapping, deburring and countersinking at the same time while working can save working hours and improve work efficiency Dimensions: M3 x 0.5-67mm - M4 x 0.7mm-68mm - -M5 x 0.8-70mm - M6 x 1-70mm - M8 x 1.25-73mm - M10 x 1.25-73mm Material: The drill bit is made of high speed steel (high speed steel) surface titanium plated, high performance and durability, rust resistant, sturdy and durable; Self-centering design: No need for additional center drilling or center punching Multi-function: The drill bit is suitable for hand electric drill, impact drill, bench drill and tapping machine to work on aluminum, wood, plastic, iron and other materials Simple operation: This tap with 6.35mm hex shank can be installed more easily and securely in power tools Quantity delivered: 6 pieces Product color: gold Product specification: M3*M10 (as shown in the picture) Product weight: about 88g Remarks: Due to factors such as the display, shooting light, production batch, etc., there may be a little color difference in the actual object, which is a normal phenomenon!Good quality product