Trackball 3" High Ball Assembly - 56-0110: Please choose your color. Not recommended for Golden Tee trackball replacement. Reference part number: 56-0100-11HL. 3" diameter ball with new case design allows ball to sit higher within control panel. More hand contact and enhanced play with high-ball. Exceptional performance and precision is achieved from hardened steel shafts. Standard AMOA harness included. Mounting hardware sold separately. Durable polycarbonate plastic material. Mounting kits available for wood or metal available. Can be used as a heavy duty alternative to a mouse for interactive displays when used in conjunction with trackball interface kit. Used on P&P Centipede/Millipede/Missile Command game and Midway The Grid game Trackball Size: 3" Part Number: 560110