This 20" guide bar and chain combination features a .325” chain ideal for occasional commercial users. The low-vibration micro chisel cutters offer excellent performance, easy maintenance and low kickback. The AdvanceCut guide bar features a small radius multi-rivet nose for good durability and control. Please use Oregon Customer Care to ensure the best fit for your chainsaw. Fits many chainsaw models, including but not limited to the following: Craftsman 358.35020, 358.35021, 358.35121, 358.35607, 358.35492, 358.35120, 41146, 358.35633, 358.35119, 41920. Echo CS400EVL, CS4100, CS440, CS4400, CS4500, CS4600, CS5000, CS510, CS520, CS4000, CS3900, CS3600, CS-440. Hitachi CS51EAP. Homelite 4100, 4150, 4500, 4550, Super 240, TIMBERMAN, UT10518, UT10519, UT10520 42cc 46cc, UT10522, UT10526, UT10550, UT10552, UT10910, UT10927A, UT10942A, UT10946A, UT10946D, ZR10518, ZR10520, ZR10522, 27, 25. John Deere 300CS, 450V, 45EV, 46EV. Poulan 2700, 2750, 2800, 285, 2900, 295, 3000, 305, 3050, 310, 3100, 315, 335, 4620AV, 4620AVHD, 4620AVX, 2775, 3300, 4620, 336, 306 SA. Ryobi RY10518, RY10519, RY10520, RY10521. Shindaiwa 377, 415, 416, 450, 451, 488, 500, 502s. Tanaka ECS4000, ECS4000B, EVC4501, TCS40EA, TCS51EAP.