Pair of vintage detachable "Wearwells" starched shirt cuffs. Hard to be sure when they were made, but probably the first half of the 20th century. These are quite long cuffs, and were presumably designed as part of a nurse's uniform or similar. With plain metal studs for fastening.
Measurement around the wrists (from the centre of each buttonhole) 8".
Overall size of cuff, measured flat, is 9.5" x 4.75".