For offer is a pair of bicycle cotter pins for old-style cotter cranks.  Each is complete with washer and nut.

Pin diameter: 8.4 mm (0.330 inch)

Pin shank length: 29 mm

Thread length: 13 mm

Overall length: 42 mm

Taper: full length

Finish: zinc plating

Brand: unknown

Purchase multiples for the same cost of shipping.

A representative example is shown.