Ball bearing compatible with: FARMER for chainsaw models: FA2510 type: 6001-C3 quality: NSK Inner diameter: 12 mm Outer diameter: 28 mm Height: 8 mm Code: 54.120.0930 ORIGINAL CODE: ALSO COMPATIBLE WITH: SANDRIGARDEN MODELS: SCS25 SG925 30CS Original code: ALSO COMPATIBLE WITH: ZENOAH MODELS: 2500 original code: CZ