Essential Function -- Designed to distributes the stress and weight of the motor to protect the transom. These plates will separate the stress and weight to the hole plate area instead of only the support bolts. Upper and Lower Protection – Package contains 1 x TSP-1 plate for top support and 1 x TSP-2DP plate for lower support, all the plates measure 3/8 inch thickness. Premium Quality -- Built by high quality cast aluminum with CNC cut, the plates are very solid and durable, in most circumstances they won’t break. Outstanding Craftmanship – CNC machined technology ensures every plate we build is extremely precise and has the highest performance. Zinc coated on the surface to reach a great rust and corrosion resistance and keep a new looking even after years using. Satisfaction Guarantee -- Yoursme aims to provide excellent products and best service for customers. You can simply return it if you are not satisfied with the product. We support 12 month warranty.