Ronstan Series 40 All Purpose Block - Fiddle - Becket

The Ronstan Series 40 All Purpose Block - Fiddle - Becket is purpose-built for sailors and boaters who demand reliable load handling in demanding marine environments. Whether you're running a cruising sailboat, a racing dinghy, or managing deck operations on larger vessels, this fiddle block delivers the mechanical advantage and durability that comes from decades of Ronstan engineering. The fiddle configuration—with its dual-sheave design and becket attachment point—handles multiple rigging scenarios without requiring separate hardware for each task.

Built around Ronstan's proven Series 40 platform, this block features a self-lubricating sheave that operates smoothly under sustained load with minimal maintenance over its service life. The Captive Lock™ universal head accepts standard shackles while the slotted pin design eliminates the need for additional fasteners, reducing complexity below deck. Exceptionally high working loads mean you gain mechanical advantage without penalty—the compact 3 x 1 x 6 inch footprint and 0.2 lb weight won't burden your boat's weight budget, yet performance doesn't suffer. The becket casting provides a secure attachment point for securing standing rigging or creating fixed purchase systems.

Cruising sailors, racing crews, and charter operators integrate this block into mainsheet systems, jib leads, traveler lines, and control-line applications where reliability trumps compromise. The fiddle-block design is equally at home on small boats rigging outhauls and preventers as it is on larger vessels where deck space and weight efficiency matter. Installation is straightforward—use the becket with rope or webbing, or attach via the universal head with a shackle to existing deck hardware. This block performs across freshwater and saltwater conditions, making it the go-to choice for boaters who want redundancy they can trust.