【Compatible with】 for Stihl FS 38, FS 40, FS 45, FS 55, FS 56, FS 70, HL 45, HT 56 and other brush cutter series. 【Improved Handling】 The high-quality sprocket helps improve the handling of the brush cutter's pivoting head, giving you better control and increasing efficiency when gardening. 【Scope of delivery】 1 x clutch, 1 x clutch drum. 【Perfect fit】 The clutch drum is designed according to strict OEM standards and Manufactured and perfectly matches the original parts. Replacement is quick and easy. 【Part Number】 Clutch - 4140 160 2005 and 4140 160 2001. Clutch Drum - 4144 160 2904.