Generic Compatibility & sturdy This flexible drive shaft (4137 711 ) seamlessly integrates with over 16 models including 70/90/100 and 40/94/110RX, featuring weather resistant steel construction for extended service life in demanding lawns mower operations. Engineered Accuracy & User Friendly Design Measuring 60 5/8" with tool release installation, the reinforced steel shaft maintains optimal torques transmission while reducing operational fatigue during prolonged landscaping tasks. Ideal for homeowners and professional landscapers requiring efficient replacement parts for Stihl and Husqvarna compatible trimmers/brush cutter, particularly those maintaining large yards or commercial green spaces. Optimizes efficiency when clearing dense undergrowth, edging uneven terrain, or performing seasonal lawns maintenance across residential gardens, parks, and agricultural properties. Accuracy machined to over OEM specifications, this drive shaft ensures vibrations release operations and consistent power , making it essential for upgrading outdoor power equipment without compromising manufacturer recommended standards.