Description Are you looking for a professional, yet reasonable pulley wheel? Are you in search of a sturdy, trustworthy tool at once? If yes, look no further! Our groove wheelmust meet your needs, this pulley wheel is one of the best choices for you. Features - Color: Black - Material:POM - Size: About 2.00X2.00X0.70cm/0.79X0.79X0.28in - Inner diameter: 5mm outer diameter:20mm, width: 7mm - You can apply it to sliding doors, track doors and other furniture to easily replace old accessories. - Efficient and durable heavy duty track wheels can be well applied to your daily life for your convenience. - U type pulley with good performance, good toughness, wear resistance and stable structure. - Reasonable sheave embedded steel rolling bearing design helps to reduce vibration and make it more practical. - With fine workmanship, durable and sturdy, not easy to wear or tear, you deserve to have one. Packing list: 4 x Pulley Rollers