Function: The installation tools help ‘kidney bean’ or ‘omega shape’ rod seals or u-cups to help with installing them into a hydraulic cylinder head gland. Features: These tools greatly reduce the risk of damaging the seals from the sharp metal edges during installation. Package includes: 1 *Surface Mountable Twistor Handle Block,1*Two Sided Seal Pick & Hook Multitool,4*Sizes Seal Twistors Tools. Size: .