Ronstan RF41712 Series 40 Exit Block – 40mm Sheave, High LoadThe Ronstan RF41712 Series 40 High Load Exit Box is engineered for high performance sailing applications, offering exceptional strength to weight ratio. Featuring a 40mm Nylatron sheave, this block accommodates rope diameters up to 10mm and wire up to 5mm. Its plain bearing design ensures smooth operation under high static loads, with a maximum working load of 500kg and a breaking load of 1000kg. The Grade 316 stainless steel housing provides

Dispose of expired flares via approved NZ disposal programmes

advanced course control

UV-stabilised acetal sheave for smooth

Model: RF20101

traveler fine‑tune

The Ronstan RF45111 is a rugged and efficient 40mm single pulley block with integrated becket

Constructed from high-quality

Smooth rope entry and release under load

Sheet leads and control lines

Cuts and seals low melting point synthetic fibres with ease

Single grip design – classic and functional

where space is limited but performance is critical