Ronstan Series 40 BB Double Utility Block - Swivel Shackle Head (Non-locking) Gas Leak Increases adhesion of Sikaflex and

Increases adhesion of Sikaflex and Sikasil on various substrates

NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles

Can be used on fibreglass

Abrasion resistant

Ronstan Series 40 BB Double Utility Block - Swivel Shackle Head (Non-locking) Gas Leak Increases adhesion of Sikaflex andRonstan Series 40 Ball Bearing Double Utility Block, Swivel Shackle Head (Non locking) RF40200 Low friction Acetal or Torlon bearing system Lightweight Cheek cut outs for easy bearing maintenance Features a swivel shackle head for full 360 rotation Applications Mainsheet Halyard Vang Spinnaker control lines on off the beach catamarans, one design classes and sportsboats up to 8m (26ft) Materials Acetal ball bearings UV stabilised Acetal sheave Grade