【Silent Duplex Bearing Design】The groove wheel pulley has two silent and wear-resistant duplex bearing, making the cable pulley run smoothly and stably, which can greatly reduce the friction and the noise of the cable pulley, you can hardly hear the sound when it works.
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Groove Pulley Wheel for Rope Wall Mounted 1 Pack Stainless Steel Super Silent…
Silent Duplex Bearing DesignThe groove wheel pulley has two silent and wear-resistant duplex bearing, making the cable pulley run smoothly and stably, which can greatly reduce the friction and the noise of the cable pulley, you can hardly hear the sound when it works.