Note: The contactors for skyhooks can vary. Skyhook over the years used five different types of contactor with no consistency on what crane or year model they used them on. Below are some links to pictures of each type to help you figure out which style of contactor you have.
Parts Breakdown 45 Jr. 64 Jr. Skyhook
Parts Breakdown 45 54 65 80 Skyhook
Parts Breakdown 85 100 115 Skyhook
Parts Breakdown EX 100 130 Skyhook
Parts Breakdown IH 55 Sponco (Coming Soon)