Ronstan Series 40 Ball Bearing Orbit Block™, Rubber Stand-Up Boot RF45140 helmet and forms a durable shell

and forms a durable shell that helps protect the surface against weathering

Single loop head blocks include an O-ring to separate running line from head lashing or fixing

Combine with a weather shield top for an all over weather shield that will keep you comfortable and dry

pre-shaped pattern for a high comfort fit

Ronstan Series 40 Ball Bearing Orbit Block™, Rubber Stand-Up Boot RF45140 helmet and forms a durable shellSERIES 40 BALL BEARING RF45140 FEATURES Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Swivel shackle head for unlimited block rotation grade 316 stainless steel. Stainless steel shackle head for ultimate durability with harsh fixing points. Total block load. Becket MWL 125kg (275lb), BL 250kg (550lb). Suitable for 3: 1 system at rated block load.