40 mm Ball Bearing Block - Single Lead Genoa This is based mainly on

This is based mainly on the righting moment of your boat

Suitable for heavy and static loads in halyard tuning

thread size 5/16"

Breaking Load: 300 kg

The block is easy to install with the included deck mounted bracket and spring

40 mm Ball Bearing Block - Single Lead Genoa This is based mainly onThe BBB40 Lead Block is designed for leading control lines on dinghies and keelboats. The 40 mm sheave is equipped with stainless steel ball bearings for smooth operation under dynamic loads. Glass fiber reinforced cheeks enhance strength and durability. Ideal for moderate and dynamic loads with minimal friction. BlockType: lead,single SubType: lead single Breaking Load: 500 kg Safe working Load: 250 kg Max line size: 10 mm