This product is a swiveling eye bolt that attaches directly to a drift boat’s anchor arm. Coupled with the SpinRx Swivel Pulley, these two products completely eliminate anchor rope twisting. To install the SpinRx Anchor Arm Swivel, simply align the product on the anchor arm, mark the hole locations, and drill two holes for attachment. Stainless steel hardware (bolts, washers and Nylok nuts) are supplied with every product. We have received feedback from our SpinRx Swivel Pulley customers that they would like the rope attachment point to swivel like our pulley. In our development efforts, we observed that allowing the anchor rope to swivel at the tie off point, the life of the rope is prolonged.