Cofufu 4 Pcs 1" Plastic Wheel Rectangle Top Plate Fixed Swivel Caster Set Material: Plastic, Metal, Color: White, Silver Tone Wheel Size: 1" x 0.5" (D*H); Holes Diameter : 0.16" Screw Size: 0.15" x 0.63" Top Plate Size: 1.5" x 1.27" x 0.04" Total Height: 3.6cm / 1.42" Package Content: 4 x Swivel Caster, 16 x Steel Screw