6PCS Black Plastic Rectangle Tube Inserts End Blanking Cap 20mm x 50mm Product Mame : Rectangular Tube Insert;Top Size : 20x 50mm / 0.8" x 2" (W*L) InnerSize : 39 x 11mm / 1.5" x 0.43" (W*L);Over Height : 18mm / 0.7" Material : Plastic;Color : Black Net Weight : 37g Package Content : 6 x Rectangular Tube Inserts