30 mm Ball Bearing Block - Single, Swivel Length 45 mm 9 tonnes and fractional rigged

9 tonnes and fractional rigged yachts up to 2

Genua: 4478 mm

SpringForce: 1200 N

Closewd: 3280 mm

All of this is thoroughly explained on Seldén's website

30 mm Ball Bearing Block - Single, Swivel Length 45 mm 9 tonnes and fractional riggedThe BBB30 Single Swivel Block is a 30mm ball bearing block with a swiveling shaft. A swivel lock, a plastic washer which is placed between block body and shackle, is included for fixed 0 or 90 shackle position. The block features stainless steel ball bearings for strength and smooth rotation and glass fiber reinforced polyamide sheave and cheeks. Acetal bearing cage to prevent ball to ball friction and to reduce weight. The center hole can be used as