Harken 40mm Carbo Air Double Swivel Block ADDBUOY3 you also need a trailer

you also need a trailer that can stand up to the road ahead

Weight (excluding mounting hardware): 1

This mode delivers stunningly clear images of structure and fish off to the sides of your boat

Receivers/transmitters: 2 x receivers

Carrying case

Harken 40mm Carbo Air Double Swivel Block ADDBUOY3 you also need a trailer40mm Carbo Air Double Swivel Block Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave (mm)40 mm Sheave (in)1 9 16 in Maximum line (mm)10 mm Maximum line (in)3 8 in Maximum working load (kg)440 kg Maximum working load (lb)970 lb