Roller Kit can be mounted flush on your speargun. The Double Roller Stainless Steel bracket has two 1/4" pins that anchors into your wood speargun stock and act as a spindle for the rollers. The Single Single Roller Kit has one 1/4" pins.These are very high quality rollers that are wide enough to work with 5/8 (16mm) powerbands.
Does NOT include rubber. Bulk Rubber by the foot sold here