The STIHL 42111602900 Drum Coupling is an authentic OEM replacement part designed for various STIHL hedge trimmers and pole pruners. This crucial component ensures proper power transmission within the machine's drive system. It is compatible with STIHL HL 75, HL 75 K, HL 95, HL 95 K, HL 100, HL 100 K, HLE 61, HLE 61 K, HLE 71, HLE 71 K, HL-KM 0°, HL-KM 135°, HL-KM 145° hedge trimmers, as well as HT 70, HT 70 K, HT 75, HT 100, HT 101, HT 130, and HT 131 pole pruners. Ensure optimal performance and longevity of your STIHL equipment with this genuine drum coupling.