Best Seller | RIDGID K9-102 Chain Knocker,10 in Overall L,Steel Chain Knocker, Head Type Chain Knocker, Compatible Cleaner Series FlexShaft, Connection Size 1/4 in, Maximum Drain Line Inside Diameter Not Applicable, Minimum Drain Line Inside Diameter 1 1/4 in, Product Type Chain Knockers, Compatible Cleaner... ... more RIDGID K9-102 Chain Knocker,10 in Overall L,Steel Chain Knocker, Head Type Chain Knocker, Compatible Cleaner Series FlexShaft, Connection Size 1/4 in, Maximum Drain Line Inside Diameter Not Applicable, Minimum Drain Line Inside Diameter 1 1/4 in, Product Type Chain Knockers, Compatible Cleaner... | | $44.29 go to store |