RONSTAN 30mm Orbit Block - Stand-up, Swivel, RF35140 Blocks_Traveler Ronstan designs and manufactures world-class

Ronstan designs and manufactures world-class blocks and pulleys for all types of sailing

A razor knife should be used to free the caulk from the side of the seam

The Ratchamatic cheek block mounts on either port or starboard

In addition to its super fast grab-and-release mechanism for foolproof singlehanded removal

Type 316 — the second most common grade (after 304)

RONSTAN 30mm Orbit Block - Stand-up, Swivel, RF35140 Blocks_Traveler Ronstan designs and manufactures world-classThe 30mm single block with stand up swivel is a true workhorse and is suitable for use in most dinghy control line systems. Great for mainsheets, and control line turning blocks mounted low in the cockpit. Ronstans goal for the Orbit Blocks was to produce a block with the highest strength to weight ratio and they nailed it. Through extensive computer modeling, unnecessary metal components were replaced by engineered lightweight composites without