Convenient, Practical & Leakproof Plugs: The BOPOREAE Rubber Scupper Plug is a twist/turn pipe plug for a leak proof seal; The Premium Stainless Steel and Nitrile Butadiene Rubber (NBR) construction makes this test plug resists heat, anti-freeze, oil and rust inhibitors, wear-resistant, wet-dry versatile and airtight; Sturdy and Durable, Not Easy To Deform What ls This Plug Used For: This Universal Rubber Expansion Plug with Removable Wrench Handle can replace any standard 3-9/16"~4-5/16"(90~110mm) test andseal plug for various Drainage Hole&Pipe Opening; Round pipe plugs can be used for Low Pressure & Leakage Test, Sealing & Clean-Outs for Kitchen, Bathroom,Garden, Automotive, Construction Industry and Marine Boats; We have sizes1 to 6-1/2 inches(25-165 mm)available How To Use: Place our supplied Allen wrench and turn the handle clockwise the rubber will be squeezed and expanded until the hole is clamped forming a leak-proof seal; Turn the handle counterclockwise the rubber pipe plugs returns for easy removal and next installation; The handle is removable for a wide range of scenarios Where You Will Need This: This expandable rubber plugs is widely used for Sewer Pipe Line, Fountain Hole, Basement, Garage Drain, Septic System, Bathroom Sinks or Showers, Winterizing Swimming Pools’ Skimmer & Return Line, Motorcycle, Cars, Trucks, Lawn Roller, Water Tank, Intercooler, Boat Drain Plugs Ship Water Mouth and anywhere in the right size and environment WORLD-CLASS CUSTOMER SERVICES: Not suitable for non-circular or internal expansion hole, not suitable for long-term use in high pressure, high temperature or acid and alkali chemical tubes; You will love this premium practical and convenient tubes plugs BOPOREAE Universal Mechanical Test, Seal, Cleanout Pipe Plug for Drains, Clean-outs Expandable Rubber Plugs with Removable Wrench Handle Main Material: Stainless Steel 304+Rubber Adjustable Scupper Plugs Fits: 1 to 1-5/16 In Hole(25-33 mm) 1-1/2 to 1-3/4 In Hole(38-45 mm) 1-3/4 to 2-3/16 In Hole(45-55 mm) 2-1/16 to 2-9/16 In Hole(52-65 mm) 2-9/16 to 3-1/8 In Hole(65-80 mm) 3-3/8 to 3-15/16 In Hole(85-100 mm) 3-9/16 to 4-5/16 In Hole(90-110 mm) 4-5/16 to 4-15/16 In Hole(110-135 mm) 5-5/16 to 5-7/8 In Hole(135-150 mm) 6-1/2 to 7-1/16 In Hole(165-180 mm) Easy To Use: Inert the plug in the drain hole and rotating the wrench until a slight resistance is felt, the plug will now be held firmly in place. For Various Holes: Damaged Holes, Reserved Holes, Drainage and Sewage Pipes, Fountain Hole, Oil Spill Holes, Concrete Holes and Other Holes Take it as: Expansion plug, Marine Boat Plugs, Floor Drain Pipe Plugging, Pool Winterizing Plug, Auto Water Tank Plug, Pressure Test Plug, Leakage Test Rubber Pier Pipe Plug, Inter-cooler Seal Plug, Pipe Plugs, Sink Pipe Leak Plug, Seal & Clean-out Pipe Plug, Anti-Return Pipeline Plugging, Pool Return Line Plugs, Plumbing Lines Plug, Skimmer Plugs, Filter Drain Plug, Pvc Tool Tube Plugs, Winter Rubber Plug, Cleanout Plug, Shower Plug Application: Marine Boats, Sewers, Swimming Pools( In-ground & Above Ground Pool), Ponds, Pressure Leak Detection, Dryer Vent, Rain Catch Water Tank, Septic System, Sewer and Drain & Pipe Systems, Bath Bub, Garage Drain, Lawn Roller, Truck Pressurized Water System, Bathroom, Garden, Automotive, Intercooler, Construction Industry, Kayak,Lawn Roller, Ship Water Mouth, Basement, Garage Drain, etc.