• Bolt-in O.D. spring cups designed to center the spring on the outside diameter of a 5" spring
• Only recommended if you always have tension on the spring through travel
• This cup works well with the WM165BO bearing to help with spring twist friction
• Short cup (WM404SC) is 1" tall and tall cup (WM404TC) is 2" tall
• Drop cup design (WM404DC) moves the spring table down 1" compared to the WM404SC spring cup and the raised cup design (WM404RC) moves the spring table up 1" from the WM404SC
• Works with WM304B - 1" coarse screw jack bolts, sold seperately