Ronstan Series 75 BB Halyard Core Block Sheave Diameter:75 mm All Whale Twist Deck Shower

All Whale Twist Deck Shower models are easy to plumb

all silicone free

Lightweight forged construction

Installs in 41

Sheave Dia: 75 mm

Ronstan Series 75 BB Halyard Core Block Sheave Diameter:75 mm All Whale Twist Deck ShowerRonstan Series 75 Ball Bearing Halyard Core Block, screw pin with roller head RF74108 Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Suits direct attachment to mainsail headboard for 2: 1 halyard. Removable 8 mm (5 16 inch) screw pin at head Acetal roller on head pin to suit spliced line attachment Materials Sheave: U. V. stabilised