This is a brand new exhaust pipe clamp 1 3/4″ inside diameter with 21 finned.
Part number: 70-4501, E4501 Clamp (quantity of 1)
70-0409, E409 Bolt (quantity of 1)
70-8860, E8860 washer spherical (quantity of 1)
Fits: Triumph T120, TR6 Twin from 1950-68