TITAN / DICO Model 10 Drum Brake Actuator Dico Model 10 Hydraulic Surge Brake Actuator is zinc-plated for excellent corrosion-resistance. Bolts over 3" wide trailer tongue and includes standard, heavy-duty coupler with 3" drop 2 5/16" Ball Size. Built in 3" Drop Breakaway kit included Ball size: 2-5/16" Mounting: 3" wide tongue Mounting Holes on 3" and 5" Centers Capacity: 12,500 lbs Maximum tongue weight: 1,250 lbs