uxcell 24Pcs Square Multi-Gauge Insert Black 25x25mm for Box Section Tube Product Mame : Square Dome Inserts;Top Size : 25 x 25mm / 1" x 1" (L*W) Mounting Size : 24 x 24mm / 0.94" x 0.94" (L*W);Total Height : 26mm /1" Material : Plastic, Metal;Color : Black Net Weight : 175g Package Content : 24 x Square Dome Inserts