Marpac L.E.D. Advantage Bi-Color Combination Bow Light - 3-1/4 x 2-5/8 InchesMarpac L. E. D. Advantage Bi Color Combination Bow Light 3 1 4 x 2 5 8 Inches LED Advantage of low power use (2. 2 watts), long life and shock resistant durability. Certified USCG 2nm, for use on boats under 39. 4 (12 meters). Dimensions: 3 1 4 L x 2 5 8 W. Low profile mounts securely on almost any flat surface. Epoxy coated electronics encased in corrosion proof composite case protected by a tough Nichronium shell. The #8 pan head mounting screws