Click to expand Tap to zoom Chain Knocker for 50mm Pipe (#RS-1035/2) by Renssi Save Liquid error (product-badge line 32): -Infinity% $42.20 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Renssi Chain Knocker For 8mm cable, 35mm pipe, with 2 chains