SPROCKET FOR POWER SAW COMPATIBLE WITH MODEL: 340 340 340e 345 345e 346 346XP 346XPG 350 351 353 353E-tech 355 355EPA 357 357EPA 357XP 359 359EPA 445 445e 450450e 450Rancher INTERNAL BELL SIZE: 69mm BORE SIZE: 15. 9 mm TOTAL HEIGHT: 16.7mm .325" 7 TEETH roller cage: 11983 self-aligning ring: 11982 HUSQVARNA CODE: 108215X ORIGINAL CODE: AT