Made of semi steel material
18 different sizes: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm
Connect the watch band to the case or buckle
These watch strap spring pins are kept in a transparent plastic box for easy storage
These pins are stored in 18 compartments, each compartment has 20PCS pins