Made of Delrin resin wanuxeipu-ri-. # R31 – 08 SP front wanuxeityu-bu (with 39t pulley): OTA R – 31, etc. to use. Abrasion resistant and extremely low derurin resin is used to, the rotation, improve efficiency. wanuxipu-ri- designed to change the number of teeth of your things, with the final reduction ratio change can be done easily.
Can also be used for TA – 05 & 06.