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.
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