Lenco 16" x 12" Standard Performance Trim Tab Kit 12VLenco's first trim tab series designed specifically for performance. Lenco 15039 101 comes equipped with a thicker reinforced hinge and complimented with an electro polished finish for added quality and protection. Boat lengths 20' (6. 1m) to 36' (11m). Blades are constructed of electro polished 12 gauge (2. 7mm) laser cut 304 stainless steel with 1" (2. 5 cm) turned up edges and a 5 degree taper on the inside, heavy duty hinge with 1 4" (6. 4mm)