The durable Scotty Model 241 Deck Mount is designed to accommodate Scotty Rod Holders. They are a great way to maximize your rod holders versatility as well. Compatible with all Scotty post mount rod holders. Dimensions: 4 x 2 x 2. Bolting dimension: 1-5/16 x 3-3/16. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Rod Holder.