50mmx100mm Plastic Rectangle End Caps Tube Pipe Inserts Black 2Pcs Product Mame : Rectangle Tube Insert;Top Size : 100 x 50mm / 4" x 2"(L*W) Thread Size : 99 x 48mm / 3.9" x 1.9"(L*W);Overall Height : 21mm / 0.8" Material : Plastic;Color : Black Net Weight : 46g Package Content : 2 x Rectangle Tube Insert