Made of iron and PTFE material, screw-in chair glides, durable and strong. Easy to install, screw-in anti-sliding wood floor protectors to lasts longer than stick-on pads, which can help reduces friction, vibration and noise while moving furniture. Features -Color: Assorted. -Material: PTFE, iron. -Size: About 2.50X2.50X0.70cm/0.98X0.98X0.28in. -Size: About 2.20X2.20X0.70cm/0.86X0.86X0.28in. -Size: About 1.90X1.90X0.70cm/0.74X0.74X0.28in. -Specification Size: 19mm, 22mm, 25mm. - Pre-drill a hole and just tap the pads for furniture into a furniture leg and avoid scratches and annoying noise. - Can be used on tables, chairs, desks, sofas, couches, and a variety of other furniture items. - Smooth PTFE bottom is easy to move and great for vinyl floors, carpeted floors, and laminate floors. - Protects hardwood, and ceramic floors from scratches and marring and keeps your furniture in place. - Simple for installation. Easily mounted onto the bottom of wooden furniture chairs tables by gentle hammering. Package list: x Furniture Sliders with Screws (3 Sizes)