This durable aluminium alloy sausage gun is designed to fit sausage packs, bulk caulk, or cartridges. Thrust ratio of 18:1 for use with medium to high viscosity materials evenly ,which work great on silicone caulk, acrylic, or vinyl latex caulk—virtually any type of caulk works well with this caulk gun.The smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod. Equip with a comfortable grip for controlled application, the caulking gun distributs the material evenly, and efficiently produc quality professional edges, corners and joins. How to use 1. Remove the front cap from the gun. 2. Pull the rod all the way back out of the gun. 3. Drop the sausage pack into the barrel. 4. Cut off the sausage staple completely with a utility knife or scissors 5. Replace the front cap with nozzle. Trim the nozzle to size needed Note?Convert from sausage to cartridge by removing pusher plate What's in the Box 1* 600ml Caulking Gun 1* Operating Instruction For Manual Applications 2* White Cone Nozzle 2 *Yellow Cone Nozzle 1*360° Rotating Nozzle 1*Ladder Hook