Cannon Low-Profile Swivel Base Mounting System [2207003]Low Profile Swivel Base Heavy duty Lexan and stainless steel swivel base. 1 1 8" tall. Six point locking including two 45 degree positions. Measures 5" x 5" x 1 1 8". For all Cannon downriggers. Includes four 1 4" 20 x 1 truss head screws WARNING: This product can expose you to chemicals including di(2 ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information