Delrin Dual V Wheel Kit with 625ZZ Bearings

From the shop's description

The OpenBuilds Delrin V Wheel Kit is great for use with any V Wheel Linear Guide System and they are compatible with V-Slot Linear Rail and OpenRail. * This wheel has a double v shape that allows for it to ride on the V-Slot™ as well as the OpenRail™ Each wheel is carefully milled for consistent high precision and tolerance.it comes with Bearing 625RS ready mount. Outer dim : 24.39X10.23 mm