Ronstan Series 30 BB Stand-up Utility Block Rope Size:8 mm flushing your engine once a

flushing your engine once a year is a good preventative maintenance measure

Parts cleaning - LINK

please refer to

Halyards and other primary applications on boats up to 10 m (33 ft)

Citrus based

Ronstan Series 30 BB Stand-up Utility Block Rope Size:8 mm flushing your engine once aRonstan Series 30 Ball Bearing Stand up Utility Block RF30141 Low friction 2 stage ball bearing system provides consistent performance over the full working load range High static and dynamic load capacity. Light weight Versatile head fittings Applications Primary lead blocks on dinghies and catamarans Control lines on larger yachts Materials UV stabilised Acetal sheaves Acetal ball bearings Impact modified, fibre reinforced and UV stabilised Nylon