Ronstan Series 30 SP Single Orbit Block (with Nylatron Sheave) - Becket Hub, Lashing Head Rope Size:8 mm The GPS data source is

The GPS data source is selectable from internal and external GPS receiver

hinged lid and removable stainless mesh strainer for easy inspection and maintenance

which is made from corn waste

A simple but effective device that will eliminates water surface reflection

Ronstan Series 30 SP Single Orbit Block (with Nylatron Sheave) - Becket Hub, Lashing Head Rope Size:8 mm The GPS data source isRonstan Series 30 Special Purpose Single Orbit Block (with Nylatron Sheave), Becket Hub, Lashing Head RF35101D Lightweight Highest working load in its class Secure, versatile and secure attachment Low profile and compact Ultra low profile thru sheave becket Self lubricating Nylatron sheave and full contact bearing for high dynamic loads Applications Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft) Halyard, vang and backstay applications