14 piece white rubber bumper kit for Sentinel - Rapid STAR EXPLORER includes white O-rings, red flipper rubber, shooter tip, and playfield rubber placement diagram.
Reference:
Rapid STAR EXPLORER
Sentinel DEMOLITION DERBY
Sentinel FLYING ACES
Model PH7730WA03
644031-2 rubber ring 5/16 inch ID
644031-1 rubber ring 1-1/2 inch ID
644031-3 rubber ring 2-1/2 inch ID
644031-4 rubber ring 5 inch ID
644032-1 rubber ring 1/2 x 1-1/2 flipper