uxcell Plastic Square Blanking End Cap Tubing Tube Inserts 25mm x 25mm 15 Pcs Product Mame : Square Tube Insert;Top Size : 25 x 25mm / 1.0"x 1.0"(L*W) Bottom Size : 19x 19mm / 0.75" x 0.75" (L*W);Over Height : 17mm / 0.7" Material : Plastic;Color : Black Net Weight : 51g Package Content : 15 x Square Tube Inserts