Fit For Stihl FS350 FS400 FS450 FS480 Chain Saw Fine-Tuning Gearbox Gearbox Gearbox Head Housing. Boasts exceptional structural rigidity, ensuring stable power transmission under high loads. Lightweight aluminum alloy construction reduces overall vehicle weight, boosting fuel efficiency. Its shock‑buffering performance shields inner gear components against damage from sudden mechanical jolts. Anti‑vibration properties help prevent wear and tear on internal gears triggered by unexpected impacts., Manufacturer: HUASRCFP