Ronstan Series 60 Upright Lead, Single Upright All Purpose Lead Ball Bearing models have Torlon® needle rollers for axial loads, and acetal ball bearings for side thrust loads. Blocks can be...

Ronstan Series 75 Upright Lead, Single Features   High static and dynamic load capacity. Keeps lines close to the deck. Cheek cut-outs for easy bearing cleaning and maintenance...

Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications: Typically used in dinghy spars for control lines Materials: U...

Ronstan Series 75 Roller Bearing Block, Upright Lead, Single Single, upright lead The self-contained alloy sheave packages provide reliable, low-friction performance at high loads. The high axial...

Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. When mounted in an inverted position, are frequently used as upright leads...

Ronstan Series 50 All Purpose Upright Lead Block Single upright, Requires 2x 6mm (1/4") fasteners Lead blocks are a low profile solution for leading halyards or other rig sail controls back to...

Ronstan Series 40 Ball Bearing Upright Lead Block Single sheave upright lead block Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers...

Ronstan Series 30 Ball Bearing Block, Upright Lead Single upright Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision...

Ronstan Series 40 Upright Lead Block, All Purpose Single sheave all purpose upright lead block. Requires 2x 5mm (3/16") fasteners Lead blocks are a low profile solution for leading halyards or...