Quick Release Watch Strap Pins. One pair 1.78mm diameter. 10mm to 26mm. From UK.
19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm & 26mm. 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm. not the length of the pin. The pins are longer and squeeze down smaller so that they can be fitted.