Ronstan RF31712 Series 30 Exit Block – 30mm Sheave, High LoadThe Ronstan RF31712 Series 30 High Load Exit Block is engineered for high performance sailing applications, offering exceptional strength to weight ratio. Featuring a 30mm Nylatron sheave, this block accommodates rope diameters up to 8mm and wire up to 4mm. Its 316 stainless steel housing ensures durability and corrosion resistance, making it ideal for leading lines through decks, bulkheads, or spars while minimizing friction and chafing. With a

Its elevated profile makes it particularly effective for trailers carrying deep-V or keeled hulls

Activation: Strike ignition

this block is designed for long-term durability and corrosion resistance in harsh marine environments

this micro compass provides the accuracy

Upgrade your rig with the Harken 29 mm Carbo Fixed Block 348

offering long-lasting performance in harsh sailing conditions

Approval: SOLAS compliant

this block is 30% lighter and 60% stronger than classic counterparts

port or starboard

and other control lines on dinghies

marine-grade construction

Two acetal sheaves for smooth