Ronstan RF185 30mm Single Block – Series 30 Utility Pulley NZThe Ronstan RF185 Series 30 Single Utility Block is a lightweight, durable, and versatile sailing pulley designed for efficient line handling across a wide range of marine applications. Featuring a 30mm single sheave and tube rivet head, this block is ideal for simple control systems where reliability and ease of installation are essential. Constructed with UV stabilised acetal sheaves and corrosion resistant stainless steel cheeks, the RF185 ensures

Pin Diameter: 5mm

Guides and aligns control lines to cleats

Feature Details Cable Series 40‑Series control cables (4300/43C) Pin Size Options ¼″ (6 mm) or 5⁄16″ (8 mm) diameter Kit Includes Clevis

Heavy-duty UV-stabilised plastic for marine durability

Micron Extra is perfect for both powerboats and sailing yachts

campervans and RVs

Pin Ø - - mm

leave for 5–15 minutes

Reefing systems

Ideal for Teleflex/Morse/SeaStar/Cablecraft push‑pull control cables

and maintenance tasks where a full cartridge isn’t required—saving waste while still delivering professional results

this shackle is ideal for harsh saltwater environments and demanding rigging setups