660AN Trigger Action Grease Gun with flexible extention450g capacity Grease pressures of up to 8,500psi (586bar) Delivers up to 1. 1g of grease per stroke Twin Lock System seals the piston and eliminates the possibility of dummy lubrication High volume high pressure option facilitates fast and efficient greasing 4 jaw coupler and flexible 30cm long extension Coarse thread on barrel assembly eliminates cross threading during cartridge change over Ever Flow System enables the gun to be used with thick tacky