Key features

• •Made of high quality POM material,durable and sturdy. High heat resistance, flexural strength, fatigue strength, wear resistance and electrical conductivity.
• •The bearings in these wheel are 625, with a 5mm inner diameter.Total 20 pieces of wheels in one set, which you may use for many projects.
• •Bearing has a V groove that generally rides on a guide rail.Internal bearing sealed ball have low friction coefficient, which make bearing run smoothly and flexibly.
• •Guide rail bearing is suitable for motor, toys, model, instrument and meter, electric tools, communication equipment, fitness equipment and other fields.
• •We strive to provide you with the highest quality product and the best customer experience, if you're not entirely satisfied, please just feel to contact us at any time.