HPS Stainless 76mm-84mm HD Spring Load T-Bolt Hose Clamp for 70mm ID Hose
$9.34
The lock nut has a nylon insert to prevent it from backing out. Tighten with a 7/16" socket wrench. 3/4" wide 300 Series Stainless Steel Band and Trunnion. Zinc Plated T-bolt, Nut and Springs.