Ronstan Series 50 SP Single Utility Block (with Nylatron Sheave) - Universal Head RF374 no silicones or petroleum solvents

no silicones or petroleum solvents to evaporate

Solid colours assist identification and aesthetic look on board

or other hard non-porous surfaces

Mounts in convenient locations - housing options offer a choice of horizontal or vertical mounting on a flat or curved surface

Kit Dimensions: 3"x 5-1/2" x 1-1/4"

Ronstan Series 50 SP Single Utility Block (with Nylatron Sheave) - Universal Head RF374 no silicones or petroleum solventsRonstan Series 50 Special Purpose Single Utility Block (with Nylatron Sheave), Universal Head RF50100HL Exceptionally high working loads Lightweight Cheek cut outs for easy bearing maintenance Suitable for both rope or wire Captive Lock universal head Slotted pin shackle eliminates fouled lines Applications Mainsheet Spinnaker sheets Halyards and other primary applications on boats up to 10 m (33 ft) Materials Nylatron sheave Grade 316 stainless steel