CNC machined alloy pull starter for 1/4,1/5,1/6  CY /Zen,HPI baja ,Losi ,FG.MCD ,Boats/planes engine
material : AL 6061 T6
use bigger inner starter kit ,double spring structure design ,it is more easier to start ,compared with ordinarly pull starter,there are 8 vent around shell 
it  can help start bigger motors ,directlly finished installation ,no need destroyed flywheel.
more detaled picture as follows