13" (330mm). 360° rotating cradle frame. Bonus spout cleaner/puncture tool. For use with higher viscosity products such as latex, silicone, elastomerics, construction adhesives, drywall adhesives, sub-floor adhesives, polyurethanes, rubber compounds, etc. Hardened steel driving dog. High trigger ratio for reduced hand fatigue. Quick release push lever to help stop caulk flow.Smooth rod. Zinc alloy handle