Square Blanking End Caps Tube Inserts 15mm x 15mmx10mm 100Pcs Black Product Mame : Square Tube Insert;Top Size : 15 x 15mm / 0.6&rdquo; x 0.6"(L*W) Bottom Size : 12 x 12mm / 0.5" x 0.5"(L*W);Overall Height : 10mm / 0.4" The Distance(Layer and Layer) : 4mm/0.16", 3mm/0.12";Material : Plastic, Metal Color : Black;Net Weight : 119g Package Content : 100 Pcs x Square Tube Insert