K-valves repair tools can be used to easily disassemble the old spools and replace the new spools,saving the cost. Carefully welding,and precise hole position,complete functions,and strong,very stable. Compatible for K‑shaped inflation,portable and,very convenient for you to carry. chrome-plated brass,fine workmanships,seawater resistance,strong and. Comes with O‑shaped rubber rings,wear‑resistant,strong threaded connection and strong air tightness.