What is this?Round silicone plugs is suitable for Instrument and meter,aviation industry,transportation, radio motors,make up appliances, furniture manufacture and waterproof plugs, sealing plugs, test tube plugs, rubber bulkheads, caps, cylinder plug heads, threaded rubber plugs,etc. What will I get?Silicone Hole Plug,Material:Silicone;Color:Black;Outer Diameter:33mm/1.3 Inch;Inner Diameter:22mm/0.87 Inch;Height:15.5mm/0.61 inch;Mount hole diameter:27mm/1.06 Inch;Width:8mm/0.
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