Ronstan Series 40 BB Block, Fiddle, Becket Running Rigging Club 420 Length: 5" (1

Length: 5" (1

Opening and closing is done simply by rotating the pin half a turn

Ronstan Series 40 Snap Shackle Head Adapter

They are also handy on larger boats for uses such as lazy jacks

A- 1 27/32 inch

Ronstan Series 40 BB Block, Fiddle, Becket Running Rigging Club 420 Length: 5" (1Product Description Ronstan Series 40 BB Block, Fiddle, Becket Product Information Sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Becket pin is removeable so line can be spliced prior to fitting and is ingeniously locked