Chain Knocker Head Type Carbide-Tipped Chain Knocker Compatible Cleaner Series FlexShaft Connection Size 5/16 in Maximum Drain Line Inside Diameter 2 in Minimum Drain Line Inside Diameter 2 in Product Type Chain Knockers Compatible Cleaner Manufacturer Part Number K9-204 Application FlexShaft Machines Auger Length 4 in Auger Types Included Chain Knocker Cutter Type Chain Knocker For Use With Mfr No 64273 Material Steel Number of Blades 0 Overall Length 10 in