Allen 20mm Single Eco Block with Swivel Head Select (See Table Below):AL-2020-P-SC 20MM ECO BLK: SINGLE SWIVEL - EACH Manufacturer Part Number: 01-42443

Manufacturer Part Number: 01-42443

Ideal for larger boats 45' and up as well as RV's and aircraft

WD40 can be used as a lock protection spray but is not recommend it for long term protection

Manufacturer Part Number: 15055-001

Panther Marine 350

Allen 20mm Single Eco Block with Swivel Head Select (See Table Below):AL-2020-P-SC 20MM ECO BLK: SINGLE SWIVEL - EACH Manufacturer Part Number: 01-4244320mm Single eco block with swivel head. This modern range of plain bearing blocks is manufactured using 100% recycled plastics and 20% less material than their predecessor. Utilising other high load components from the Allen Dynamic range makes them high strength and efficient to produce, helping to reduce the long term impact of plastics and un recyclable materials on the environment. The grey sheave distinguishes them from the black sheave Dynamic