Powerful Functions: The bolt patterns are universal. Fit top bolt pattern of outboard. Fits great and adds strength to your transom. Helps balance and distribute stress of your outboard engine bolts. This support plate should be standard on all outboards for adding transom support. Simple Installation: Directly install to the top bolt holes of outboard engines. TSP-1: [Application]Universal for most outboards engines with the same bolt mounting patterns. [High Performance]Designed to distributes stress of outboard engine bolts for added transom support, protecting the transom from damage. [Product Features]Fit top bolt pattern of outboard. The 13inch bolt hole pattern fits standard top bolt holes. [Superior Material]Made of highest quality cast Aluminum, prevent corrosion and rust, ensures durable construction and long-lasting performance. TSP-2DP [Application] Fits for all outboard motors newer than 1986 that do not have twist clamps. (Note: Not fits for 2000 Suzuki DT25C and for Yamaha F350.) [High Performance]Designed to add extra support for your boat's outboard motor and keep it safely balanced with this sturdy, distributes the stress of motor engine bolts. [Superior Material]Made of top quality Aluminum, ensures durable construction and long-lasting performance. [Easy to Install]All plates are 3/8inch thick. Bolt-on installation, 2 pre-drilled holes makes it more simple to install. Mounting hardware not included. Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: Silver Material: Aluminum Alloy