SPROCKET FOR POWER SAWS COMPATIBLE WITH MODELS: ECS-300 ECS-320 ECS-330 ECS-290 TCS-2801 TCS-3301 TCS-3401 3/8" (91) 6 TEETH INNER HOOK: 60mm Ø: 13mm Overall height: 25.8mm SELF-ALLINING RING: ROLLER CAGE: 37325 TANAKA CODE: R370379 ORIGINAL CODE: AT