Ronstan RF443 – 30mm Series 30 Utility Block with Swivel Ring Head

The Ronstan RF443 Series 30 Utility Block is a lightweight, durable, and economical solution for various sailing applications. Featuring a 30mm sheave, stainless steel cheeks, and UV-stabilised acetal sheaves, it ensures long service life with virtually no maintenance required.

Ideal for vang, cunningham, and trapeze retriever systems on dinghies, as well as leech line tackles and bunk adjusters on larger yachts. The swivel ring head design allows for easy attachment and alignment.

Specifications:

Sheave Diameter: 30mm

Maximum Rope Diameter: 10mm

Maximum Working Load (MWL): 250kg

Breaking Load (BL): 500kg

Weight: 44g