Wire pulley groove,Wide application.These are specialized bearings that are used in many linear motion systems such as 3D printer, quadcopter or ship model, package with 20 pcs in package, you can keep them for spare or just substitutes for those old ones
This item is ordinary precision, adaptation to low speed, low load applications.
Wide applications in many fields: industrial machines, cars, ships, household appliances, health care system, motors, mine, petroleum, petroleum, alchemy, papermaking, agriculture, cranes, etc
Dimension:(Inside diameter)4mm x (outer diameter)13mm x (thickness)6mm.Material:High carbon steel.V groove width: 4mm.V groove deepness: 1.5mm
Please note the size befor you buy it dear customer ！
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