Ronstan RF74140 Series 75 Stand Up Block

Ronstan RF74140 Series 75 Stand Up Block has a tuned two-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads.

U.V. stabilised acetal sheave, alloy cheeks, high compression strength carbon black acetal ball bearings, grade 316 stainless steel post and hub and grade 15.5PH stainless steel pad eye.

Ideal for use on mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats up to 14m.

FEATURES

• Class leading performance and sleek, contemporary styling
• Excellent dynamic and high static load performance
• Less than half the friction of the nearest competitor
• Swivelling head post for full 3-axis articulation
• Strong precision cast pad eye base
• Resilient rubber stand-up boot prevents clatter & block falling down when not loaded
• Central hub hole can be used as a becket take-off or tie-up point
• Mount with 4 x 6mm (1/4″) fasteners (not supplied)