One is for the camera eye and the other is for Psycho Frame

Wheelbase: 263mm

Spring Length: 68mm

as well as extra hand parts for more posing options

Roto Start 3 System (for Nitro Star F/G Series Engines with Pullstart) ASC80950 One is for the cameraGet things going quickly with the Roto Start 3 starting system, The Roto Start 3 lets you use a handheld starting unit so you don't have to deal with starting the engine by hand it really doesn't get any easier to get running! The Roto Start 3 has an Xtra Long starting wand to make sure you can get through to the back of the engine without struggle even on the Savage XL 5. 9 To protect your engine, the Roto Start 3 features a built in circuit breaker