Hard Plastic Tubing Tube Insert Blanking End Caps 50mm x 50mm 12Pcs Product Mame : Square Tube Insert;Top Size : 50 x 50mm / 2" x 2"(L*W) Bottom Size : 40 x 40mm / 1.6" x 1.6"(L*W);Over Height : 15mm / 0.59" Material : Plastic;Color : Black Net Weight : 115g Package Content : 12 x Square Tube Insert