- Support tool for mounting brake cylinder cups or O-rings - Set of 4 cup cones - Smooth tapered construction for smooth and easy installation -Taiwan - Cup cone (Cup locket) size: Φ9/16" (14.4mm-16.0mm) Φ5/8" (15.9mm-17.5mm) Φ11/16" (17.5mm-19.1mm) Φ13/16" (20.7mm-22.4mm) - Color: Blue, Orange, Red, Silver