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  • Ronstan Series 50 All Purpose Block - Double [RF51200]

    Series 50 All Purpose Block - Double

    All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Swivel shackle head for full 360 degree rotation (non-locking).


    • Exceptionally high working loads
    • Low maintenance & long service life
    • Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
    • Slotted pin shackle eliminates fouled lines


    • Mainsheet and halyard applications, vang and spinnaker control lines on boats to (33ft). 10m
    • S60 - on boats up to 40ft, (12m)


    • Grade 316 stainless steel load strap
    • Impact and UV resistant, fiber reinforced Nylon cheeks


    • Sheave Diameter: (inch) 2" / (mm) 50
    • Max Rope Diameter: (inch) 1/2" / (mm) 12
    • Pin Diameter: (inch) 1/4" / (mm) 6
    • Maximum Working Load: (lb) 2200 / (kg) 1000
    • Breaking Load: (lb) 4410 / (kg) 2000
    • Weight: (oz) 9.0 / (g) 255