Joanne, the skull cap spinner replaces everything your current spinner has. No more metal bulkhead behind the prop that the spinner mounts to, no more plastic bulkhead in front of the prop to support the spinner. Both of those crack often. For my old spinner, one or the other would crack every 100 hours or so, and that got expensive. The skull cap spinner only has a bracket that uses the prop bolts for mounting, and a screw that holds the skull cap in place. 400 hours later, no more cracking and replacing parts, and it looks better, too!
Jeff Hersom N3740J '67 150G "Gremlin"
Hangar W-6, Helena Regional Airport
Places I have landed Gremlin:
![[Linked Image from visitedstatesmap.com]](https://visitedstatesmap.com/image/ALAKFLGAIDILINIAKSKYLAMIMNMSMOMTNENCNDOHOKSDTNTXWIWYsm.jpg)