Sea Sure 1" Bolt Down Block

Special Price £8.06 5% off £8.48
In stock

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  • YouBoat Warehouse – Fareham
    Unit 18 Dean Farm Estate
    Fareham, Hampshire, PO17 5BN
    United Kingdom
    01329 826 500
    Where to find us
  • YouBoat – Gosport
    Endeavour Quay, Mumby Road
    Gosport, Hampshire, PO12 1AH
    United Kingdom
    02392 522 226
    Where to find us
  • YouBoat – Swanwick
    Premier Marina Bridge Road
    Swanwick, Hampshire, SO31 1ZH
    United Kingdom
    01489 358 955
    Where to find us
  • Nick Cox Chandlery – Lymington
    King’s Saltern Road
    Lymington, Hampshire, SO41 3QD
    United Kingdom
    01590 673 489
    Where to find us

Sea Sure 1" Bolt Down Block

Seasure 25mm bolt down plain bearing block The high strength to weight ratio and simple construction gives years of trouble free service. Featuring hollow rivet for lightness and tough "Arnite" plastic sheave that provides a good bearing surface allowing easy rotation on a stainless steel axle. Body construction Electro-polished 316 stainless steel with hollow rivet.

The 25mm range is typically used for control lines, halyards, outhauls, kicking straps, furling lines, cunninghams, traveller controls, leech lines, dinghy spinnaker sheets and guys. Hollow axle rivet can be used as a tie through becket with ropes up to 4mm. Block can be fitted flat or upright


  • Sheave Ø (mm) - 25 mm
  • Length (mm) - 38 mm
  • Weight (g) - 22 g
  • Maximum line Ø (mm) - 8 mm
  • Breaking load (kg) - 500 kg
More Information
Brand Sea Sure
Loyalty Discount Yes
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© YouBoat Marine. VAT Number: 310718045 - Registered company: 11631800 Registered Address: C-Front Trading Ltd T/A YouBoat Marine, Unit 18, Dean Farm, Fareham, PO17. Copyright 2021.