Ronstan Series 50 Single Upright Lead BlockTypically used for halyards at the mast base.
Sheave Ø - 2 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Fastener Ø - 1/4 in.
M.W.L. - 1100 lb.
B. L. - 3310 lb.
Weight - 4.1 oz.
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.
Precision molded Acetal sheaves running on Acetal ball bearings provide high performance & low friction.
The 2-stage ball bearing system provides consistent performance over the full load range.
Acetal ball bearings
UV stabilized Acetal sheave
Grade 316 stainless steel load housing