The PC Products PPM-50 dispensing gun is designed to hold 50-ml PC Products epoxy cartridges and can be used with any sealant or adhesive with a coordinating cartridge size. The gun is made from steel for strength and durability. It has a thumb-release trigger for controlled application and a built-in ladder hook for hanging the gun when not in use. 1:1 thrust ratio. Easy loading of cartridges with a firm grip - simply open the cartridge bay, insert the cartridge and snap shut. Suitable for use for types of 2 Part adhesives and other bonding glues