Foamnseal FNS 850 45" Foam Dispensing Gun TEFLON coated non stick foam canister adapter, Stainless steel needle and check valve 40" Extended barrel for jobs that are difficult to reach (45" total length) Excellent bead control, allows variable bead size No post-dispensing foam drip.Less foam waste. Restartable for up to 30 days Compatible with Great Stuff Pro, Touch n Seal, Fomo Handi-Foam, Handi-Stick pro canister foam