uxcell Plastic Hospital Cubicle Track Curtain Carrier Wheels Rollers 10pcs Color: White; Total Size: 16 x 13mm/0.63" x 0.5"(L*D) Material: Plastic; Net Weight: 7g Package Content: 10 x Curtain Track Rollers; Product Name: Curtain Track Rollers Bolt Size: 5.5 x 4mm/0.22" x 0.16"(D*L) Hole Size: 7 x 5mm/0.28" x 0.2"(W*L)