Ronstan Series 15 BB Exit Block Butterfly In addition to chemical-free sun

In addition to chemical-free sun protection

5 x 1/4" UNF Thread

one or two-speed gearing and three superb finishes including classical bronze

sportsboats and small keel boats to 5m (16ft)

Spinlock XAS Single Clutch for Rope 4-8mm

Ronstan Series 15 BB Exit Block Butterfly In addition to chemical-free sunProduct Description Ronstan Series 15 BB Exit Block Featuring a formed single piece housing for maximum strength and minimal rope wear. Features: Smallest and lightest ball bearing block available Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O ring to separate running line from head lashing or fixing Features a flush rivet to minimize cutout and