Seasure Inline Mast Block

Brass sheave blocks.

For use in high load applications such as those imposed by wire and Dyneema halyards. The stainless steel side plates prevent highly abrasive ropes from cutting in.

Rope sizes & Types: 4mm wire, Dyneema, Spectra or Kevlar
Sheave: Chrome plated brass
Bearing: Plain – chrome plated brass onto s/steel
Body construction: Electro polished 316 s/s with hollow rivet
Breaking loads: 950kg (01-02)
Weight: 35g (01-02)
Typical uses: Halyards, outhauls, kicking straps, cunninghams, traveller control lines, leech lines