High quality collet wrench which can effectively help you tighten or loosen collets and quickly change bits.<br> The product is made of chrome vanadium steel with excellent hardness and toughness, good wear resistance and long service life.<br> The wrench is available in 6 sizes, collet diameter: 20mm, 16mm, 13mm, 10mm, 6mm, 4mm, boss diameter: 9mm, 7mm, 6mm, 5mm, 5mm, 3mm.<br> This chuck wrench is suitable for all heavy-duty chucks and meets the tightening and loosening needs of a wide range of drill chucks.It is compatible with most brands of power tools.<br> Package contains 6 drill chuck wrenches of different sizes;Applicable products: hand drills, electric hammers.Ideal tool set for securing bits.<br> Note: 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. Sold by-DIMEANI official store