Harken Wire Sheave 38mm line the valve can be maintained

the valve can be maintained without removing the vent from the wall and no tools are required to do this

but comes complete with mounting socket as pictured

8 diameters available sold by the metre

Side scissor action with unique no-crush

Small (12002B) : 280mm outside dia

Harken Wire Sheave 38mm line the valve can be maintainedLightweight, low friction wire blocks carry wire halyards and high strength control lines on boats of all sizes. Removable sheave allows the user to insert the pulley on an existing cable or rope, rather than having to thread it through. Sheave (mm) 38 mm ( 1 1 2") Weight (g) 85 g Maximum wire (mm) 3 mm ( 1 8") Maximum rope (mm) 5 mm Maximum working load (kg) 680 kg (1500 lb) Breaking load (kg) 1361 kg (3000 lb)