Roswell 1-In 4-Out Fused Distribution Block1 In 4 Out Fused Distribution Block The Roswell 3 in 4 out distribution block is everything a boat's audio system needs. Roswell distribution blocks are machined out of nickel to provide rock solid electrical connections and are protected by strong, injection molded plastic covers. They are designed to accept both ANL and Mini ANL fuses for additional versatility and feature machined nickel inserts to accommodate multiple sizes of wire. Features: