Ronstan Series 25 Ball Bearing Orbit Block™ - Lashing

<p><strong>Series 25 Ball Bearing Orbit Block™ - Lashing</strong></p><p id="isPasted">Single sheave ball bearing block with becket and lashing head.</p><p id="isPasted">The Series 25 Ball Bearing Orbit Blocks™ deliver superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.</p><p>Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high-compression strength acetal bearing system, the Series 25 BB Orbit Blocks are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 metres.</p><p>Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.</p><p><strong>Features:</strong></p><ul><li id="isPasted">2-stage ball bearing system.</li><li>Suits up to 8mm (5/16”) lines.</li><li>Hollow hub for becket take-off.</li><li>Lashing blocks suit up to 4mm (5/32”) lashing.</li></ul><p><strong>Specifications:</strong></p><ul><li id="isPasted">Max. Rope diameter (in): 5/16</li><li>Sheave diameter (in): 1</li><li>B.L. (lb): 1650</li><li>Weight (oz): 0.5</li></ul><p><strong>Applications:</strong></p><ul><li>Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft). </li><li>Control lines.</li><li>Cascading vangs.</li><li>Leech lines & cunninghams.</li></ul><p><strong>Materials:</strong></p><ul><li id="isPasted">BB Sheave and balls: High compression strength acetal.</li><li>Frame/cheeks: Toughened, glass-fiber-reinforced nylon.</li></ul> <!--- cis2:mm5sl5hm --->