4.5mm Deep V Groove Threaded Rod Track Guide Bearing Pulley Wheel 8x50x12mm
$12.49
[Size] - Wheel Size: 50x12mm / 1.97x0.47 Inch(ODxTHK); Thread Size: M6x8mm [Groove Size] - U Groove Width: 5mm / 0.2 Inch; U Groove Depth: 4.5mm / 0.18 Inch [Material] - The bearing roller is made of nylon, and the threaded rod is made of metal [DIY…