Eyestraps are useful accessories. They form light-duty mounting bases for blocks, serve as lash-down points, and can be used for fairleads.
Can be used as a fairlead for Harken 280 Cleat.

A (mm)
71 mm

A (in)
2 13/16 in

B (mm)
23 mm

B (in)
15/16 in

C (mm)
52 mm

C (in)
2 1/16 in

D (mm)
22 mm

D (in)
7/8 in

E (mm)
19 mm

E (in)
3/4 in

F (mm)
19 mm

F (in)
3/4 in