1" and 1-1/4" sizes are flat with four fastener holes. 1-1/2" size is formed (bent) with five fastener holes. High-quality stainless steel. Thickness: 1/8".
The West Advisor
The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.