Set of three silicon gel motor decoupling grommets made in Japan for Thorens TD 124, Td 121, Td 184, Td 135. This material guarantees both durability (silicon gel doesn't harden over its lifecycle of about fifteen years) and better vibration dampening. Please note that for the Td124 mk2 a set of six pieces is needed (i.e. two sets). Please note that the Thorens motor has been designed to work with a rubber decoupling system (replaced by silicone in this case as it is more performing), which makes it possible to mount even a tight belt and keep the motor from oscillating on the horizontal plane. This preserves the torque of the motor (and the dynamics). Not all decoupling systems (springs for instance) ensure these results.