Spiral double-bolt clamps are designed to provide superior sealing on corrugated PVC suction hoses such as G941W, G941WT, and G1741.
Please note that different manufacturers may use either a clockwise or counter-clockwise spiral in their hose.
Our standard corrugated hoses spiral in the counter-clockwise direction (similar to a left-hand thread), and these clamps are designed for that spiral only.