Expanding (adjustable) reamers ?

Five expanding reamers for sale or exchange for other sizes. All good condition. All 4 each. Singly or job lot for 20. Sizes:- 15/32 to 17/32; 17/32 to 19/32; 19/32 to 21/32; 21/32 to 23/32 and 23/32 to 25/52 (i.e. all sizes from 15/32in to 25/32in).