Drain Cleaning Cutter Head Type Chain Knocker Compatible Cleaner Series R600 RODRUM S Connection Size 7/8 in Maximum Drain Line Inside Diameter 5 7/8 in Minimum Drain Line Inside Diameter 3 15/16 in Product Type Chain Knockers Compatible Cleaner Manufacturer Part Number 1000001711 1000001712 1000001713 1000001714 72676 72869V Application Drain Cleaners Janitors Plumbers Cutter Type Chain Knocker For Use With 7/8 in Spirals Head Width/Diameter 75 mm Material Steel