View attachment 3091 View attachment 3092 View attachment 3093 Features: 1) 4pcs brass shock add bottom weight to 35g, weight in bottom can improve climb performance 2) Not slotted design like std plastics cap, especially when you use soft spring the spring cap will not fall out 3) Fix the spring area was longer than std, the spring was more stable 4) More rigid and durability 5) High quality brass.material with black color coating SAMIX word etched 6) Direct... Samix SCX10 II Brass Spring Retainer Cups Continue reading...