Based on this product's specifications, here are some alternatives and similar models
Clutch for First Gear for TRYTON Hammer Drill TMM710K, replacement part YTMM0166
Summary description:
Replacement clutch for the first gear of the TRYTON TMM710K hammer-drill (model reference YTMM0166). Designed as an original-equivalent spare part for repair and maintenance, it restores the transmission engagement for drilling and hammering functions. Suitable for servicing TMM710K units to recover gear performance and prolong tool lifespan.