Ronstan Series 30 Ball Bearing Orbit Block™ - Single - Becket - Lashing head

The Ronstan Series 30 Ball Bearing Orbit Block in single configuration with becket and lashing head is purpose-built for sailors and boaters who demand reliable load management on the water. Whether you're racing, cruising, or handling heavy halyards and sheets, this block delivers the strength-to-weight efficiency that serious mariners depend on when conditions matter. Designed by Ronstan—a trusted name in marine hardware for decades—this single block replaces heavier traditional options without sacrificing durability or load capacity.

What sets the Series 30 apart is its precision ball bearing Orbit Block design combined with all-composite reinforced polymer construction, which achieves an exceptional strength-to-weight ratio that translates to easier handling and faster rig response. The becket attachment allows direct line connection without additional fittings, while the lashing head provides versatile mounting options for boom vangs, topping lifts, or control lines that require secure, multi-directional fastening. The compact 1 x 4-inch profile and minimal 0.05 lb weight mean less windage aloft and reduced fatigue on your deck crew, especially crucial during long passages or competitive racing where every ounce counts.

This block excels for cruising sailors upgrading aging hardware, racing crews optimizing trim efficiency, and shipwrights restoring or repairing standing and running rigging. The lashing head configuration suits applications where welded or bolted attachment points aren't practical, offering flexibility in retrofit scenarios on older vessels. Pair the Ronstan Series 30 with modern high-modulus line and proper UV protection, and you'll enjoy years of maintenance-free operation across saltwater and freshwater environments alike.