TOOGOO(R) 25mm x 25mm Plastic Square Tube Inserts End Blanking Caps Black 10 Pcs Product Name : Square Tube Insert;Top Size : 25 x 25mm / 1 x 1"(L*W) Bottom Size : 24 x 24mm / 0.94" x 0.94"(L*W);Over Height : 13mm / 0.51" Material : Plastic;Color : Black Net Weight : 25g