uxcell 75mm x 75mm Plastic Square Caps Tube Pipe Inserts End Blanking 2 Pcs Product Mame : Square Tube Insert;Top Size : 75 x 75mm / 3" x 3"(L*W) Thread Size : 72x 72mm / 2.8" x 2.8"(L*W);Overall Height : 23mm / 0.9" Material : Plastic;Color : Black Net Weight : 66g Package Content : 2x Square Tube Insert