please note the diameter of the pin is 10mm. the grip of your drill or machine must be at least 10 mm in diameter. for easier chuck crimping. We recommend using a small amount of silicone for lubrication when crimping. recommended crimping speeds are low to medium. reliable and simple tool for crimping sleeves with a pin diameter of 10 mm no special skills are required to use the crimp. can be used with both a drill and a drilling machine the crimping kit comes with a stop sleeve to hold the chuck during the crimping process. rubber gasket 2 mm to protect the primer of the cartridge at the moment of pressure when crimping the cartridge. this gives a stop to the chuck at the moment of crimping against slippage