please refer to the  Oil seal by N.O.K(Japanese hign standard) The eye of shock has tensile strength more than 2,000kgf. The damper and spring designed for long durabiluty ( more than 1 million stoke)

Specifications :
Name : Rear Shock Absorber
Brand : TDPRO
Condition : 100% new
Material : metal
Fits: Model Height CUSTOM 330 DREAM 330 DREAM NEW 330 FIGHTER 315 NICE 335 NICE U-BOX 320 WAVE 335 WAVE-100 335 WAVE-110 335 WAVE-125 320 GTO 320 KAZE-R 320 RS-100 320 RS-125 325 RX-S 320 RX-100 320 RX-Z 315 SMART 325 JOKER 325

Package includes:
1pair shock absorbers and 2 pcs spanner wrench tools