Plastic Square Pipe End Caps Tubing Insert Plugs 40mmx40mm 50 Pcs Product Mame : TubingPlug;Plug Size : 40 x 40mm/ 1.6" x 1.6"(W*L); Thread Size: 38 x 38mm / 1.5" x 1.5" (L*W) Over Height : 19mm / 0.75";Material : Plastic Color : Black Net Weight : 356g Package Content : 50 x Tube Plugs