"TAJIMA" SUPER ROTARY CAULK WITH AUTO FLOW STOPGun with auto flow stop Steel welded frame for dependable performance. Rugged aluminum handle. Extra-long 10 1/2 inch rotating steel barrel caulk gun with twin thrust-plate dispensing system, auto flow control, seal puncture tool, and cast aluminum handle with palm grip For smooth and dependable dispensing of 1/10 gallon tube caulks and adhesives Rotating barrel to maintain ideal contact angle.