Push product evenly and keep lines clean. The heavy duty sealant gun 400ml pairs a rigid cradle with a tempered rod and smooth‑action trigger to apply controlled beads along long runs. A quick‑release stops flow cleanly at the end of a pass, and the built‑in pin clears blocked nozzles without digging through the bag. For window sealing, sanitary sets and bonding trims, the heavy duty sealant gun 400ml helps you work at pace with results that look as good as they perform.