1、Multi coated optics guarantee superior light transmission and brightness. 2、Perfect for auto repair and machinery where threads are specified. 3、Suitable for soft tapping metal, aluminum, iron. 4、Using high‑quality materials, strong and durable, has a long service life. 5、Clears chips faster and allows particles to escape easily. Description: Multi coated optics guarantee superior light transmission and brightness Perfect for auto repair and machinery where threads are specified Suitable for soft tapping metal, aluminum, iron Features:Multi coated optics guarantee superior light transmission and brightness.Perfect for auto repair and machinery where threads are specified.Suitable for soft tapping metal, aluminum, iron.Using high‑quality materials, strong and durable, has a long service life.Clears chips faster and allows particles to escape easily. Specification: Material: High speed steel Color: as the picture show Total Length: 58mm (Approx.) Shank: 1/4" ( 6.35mm) hex shank Thread (Inch): 6-32NC ( 3.5mm),8-32NC( 4.2mm),10-32NC( 5mm),10- 24NC ( 5mm),12-24NC( 5.7mm),1/4-20NC( 6.35mm) Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 6pcs Hex Shank Plug Drill Bits