Ronstan Series 30 BB Block, Double Exit With Cover Plate Hayn Rigging Pins A center cage keeps Torlon

A center cage keeps Torlon roller bearings separated and parallel to reduce friction

Its combination of stability

984 172-12 - 1/2" 25

To be used when ample room is required

Chrome bronze body with 316 Stainless Steel fork and toggle

Ronstan Series 30 BB Block, Double Exit With Cover Plate Hayn Rigging Pins A center cage keeps TorlonRonstan Series 30 BB Block, Double Exit With Cover Plate Precision moulded 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. Specifications: Max. Rope diameter (in): 5 16 Sheave diameter (in): 1 3 16 Fastener (in): 3 16 Materials: Grade 316 stainless steel housing. UV stabilised Acetal sheave.