5 Pcs Plastic Square Blanking End Caps Tubing Tube Inserts 50mm x 50mm Product Mame : Square Tube Insert;Top Size : 50 x 50mm / 1.96" x 1.96" (L*W) Bottom Size : 41 x 41mm / 1.61" x 1.61" (L*W);Over Height : 15mm / 0.59" Material : Plastic;Color : Black Net Weight : 50g Package Content : 5 x Square Tube Inserts