B17 Ball Bearing 1-3/8" OD X 1/2" ID PR02-01 It not only saves time

It not only saves time but also wear on the connectors

Use tip for detailing or grooving

All Roy Toy building sets are interchangeable

Grinding wheels must be regularly dressed to keep them sharp and clean

B17 Ball Bearing 1-3/8" OD X 1/2" ID PR02-01 It not only saves timeFor replacement of worn bearings. If adding to the shank of a router bit, use a lock collar to secure the bearing. OD= Outside Diameter; ID= Inside DiameterWHITESIDE General Bearing Repair Kit. This handy kit includes spare bearings, screws, and wrench to replace bearings on most bits. Includes five 1 2" x 3 16" and two 3 8" x 3 16" bearings, ten screws, and a 3 32" Hex Key Wrench. Note: Products labeled "Ships Direct from Manufacturer" are shipped