The pushbuttons and joysticks are fairly standard. The sticks are 8-way, have standard mounts and use microswitches. They are bat-handle style sticks with a textured red plastic grip that feels pretty nice.

The trackball mounting kit is a steel plate without standard bolt holes and is used to mount an arcade industry standard 3" trackball in a wood surface. Since plywood is too thick, this gives you a sturdy and convenient way to achieve the same clearance you would have with a steel control panel. The surface is black and textured. I did not need to purchase a trackball since I used the one already in the Millipede cabinet and replaced only the rollers and bearings with the repair kit listed above.

The spinner is a work of art and another of the products that has appeared to fill a niche in the MAME-driven build-your-own-arcade market growing on the Internet. The weight and motion of the spinner is absolutely marvelous. Oscar Controls sells a number of spinners including a new PUSH-PULL model that is functionally similar to the ones found in Discs of Tron and Zwackery. They provide a number of knob choices from which I chose the nice aluminum one with the etched MAME logo as a tribute to the marvelous software that makes this system possible.

On par with the spinner for build quality are the mounting plates and the various restrictor plates. The mounting plates serve a similar role to the trackball plate I mentioned above. They allow you to mount your controls in a plywood surface very cleanly with proper clearances. The height of the stick is adjustable through nylon shims/washers provided by the vendor.

Another benefit to the mounting plates is the the fact that they are designed to the provide a very precise base for the restrictor plates. Restrictor plates are two-piece laser cut steel templates that fit around the stick and fasten to the mounting plate. They are cut to modify the travel path of an 8-way joystick so it can be physically restricted to various directions. You will realize their benefit immediately when you start playing a 4-way (up, down, left, right) game like Pac-Man or Donkey Kong with an 8-way stick. The diagonals these sticks generate are outside of the scope of these games and tend to create hesitations or even wrong movements. With a restrictor plate the stick is prevented from hitting the diagonals or, in the case of the diagonal plate, forced to hit only diagonals (for games like Q*Bert).

The 2-way restrictors can be mounted either horizontally (for games like Joust) or vertically (for games like Defender). All of the restrictors are quite heavy, precisely cut and mount with either screws or steel pins. I chose the pins so I could easily swap restrictors in a matter of seconds.