They meet all engine manufacturers' requirements and

It is suitable for boats up to 26 ft and is mounted with 6 mm countersunk screws

If the rules are to be followed

Brand: Coast

Product dimensions: 26 mm × 50 m × 8 mm

SeaTec, Kovse galvaniseret 20mm BL123857 They meet all engine manufacturers'Galvanized thimble for use on mooring lines. It can be spliced into rope or used with wire to secure the boat at anchor and in port. Material: Galvanized Weight: 0. 31 kg Rope wire: 20 mm Package dimensions: Size: 3 cm 8 cm 10 cm Gross weight: 0. 31 kg Galvanized thimble for use on mooring lines. Can be spliced into rope or used with wire.