Specifications include, but are not limited to: Texas Parks and Wildlife Department (TPWD) seeks to purchase six (6) multi-purpose buoys with solar marine lights. Buoys and lights are needed quickly. Tideland Sentinel Multi-Purpose Buoy model no. SB-1500 or TPWD approved equivalent. 5.1.Examples: Tideland Sentinel Multi-Purpose Buoy model no. SB-1500, or TPWD approved equivalent. 5.2. Material: Steel components must be 304 stainless steel 5.3. Dimensions: 5.3.1. Diameter: 58 inches (in.) 5.3.2. Height: 74.5 in. 5.3.3.Focal Plane Height: 56 in. 5.3.4.Air Weight: approximately 575 pounds (lbs.) 5.4. Color: 5.4.1.High visibility solid yellow 5.4.2.Must not have any markings or stripes 5.4.3.Color must be embedded in the skin, outer layer of paint is not acceptable 5.4.4.Yellow retro reflective tape must be available 5.5.Other Buoy Features: 5.5.1.Capability of attaching U.S. Coast Guard (USCG) approved light on top 5.5.2.Must be collision survivable 5.5.3.Minimum 4 foot height above water 5.5.4.Lights must be visible for 3 nautical miles 5.6. Construction: 5.6.1.Internal spine: Minimum of a .75 inch diameter stainless steel pipe 5.6.2.Internal radar reflector: minimum of four (4) vanes made of 5086 aluminum evenly spaced and attached to the internal spine at the top of the buoy 5.6.3. Foam