Solvent traps have a female threaded end allowing users to attach the end cap to one end of the tube and ur thread protector to the opposite end. Solvent trap kits generally consist of aluminum and titanium, both offered on Armory Den. Posted by Jimmy Hawkins on Jan 12th 2023 https://solventtrapkit23208.wikinstructions.com/938650/die_2_minuten_regel_für_solvent_trap_kit