4 pieces of baby walker 360 rotation rubber wheel，1.96” wheels for walker baby，Our stem size is 9mm 360 ° Silent Rubber Wheel: Compared with ordinary plastic wheels, These casters are made of rubber, which are more close to the ground, and have good cushioning effect and mute effect. Multi protection Anti Rollover ENJOY SMOOTH & QUIET GLIDING. Smooth and Quiet Rolling; Suitable for most terrains The Perfect Walker Replacement Wheel: Solve the problem of old wheels getting tangled up with rugs, hair, and scratches on the floor, bringing your walker back to life UNIVERSAL: These Casters are a great replacement for baby walker casters. Multiple sizes fit most baby walkers ★★★ 4 x Baby walker Wheels - Spare Wheels ★★ ★ Smooth, quiet rolling and full pivoting motion while protecting your floors. Perfect as replacement wheels for baby walkers with hard, noiseless, rough plastic wheels. Product Information: Size: 50mm largeWheels; Diameter (9 mm). Quiet, wear-resistant, handy, shock-absorbing. Very easy to clean.