2 in inner diameter Stainless steel 5-point star design This product can be used with Model Part# Harley-Davidson XL 79-99 5SRRHD-1 Harley-Davidson FXR 82-99 5SRRHD-1 Harley-Davidson Softail 11. 5 in (3/8 in Counter Bored) 81-99 5SRRHD-1 Harley-Davidson XL H-D#41797-00 00-06 5SRRHD-2 Harley-Davidson Twin Cam H-D#41797-00 00-06 5SRRHD-2