Item Descriptions:-Compatibility: Quick release spring watch pin great for use with watch bands or other straps that have been designed for use with quick release spring bars. this is very important. Please make sure before you purchase.-Size: This quick release spring watch pin is made with four size-18mm, 20mm, 22mm, 24mm. 1.5mm diameter. To determine the right width, measure the width between watch lugs at the point where the band attaches.-Easy to Install: Double flange at each end allow for quick and easy gripping for insertion and removal using a spring removal bar tool, it is used for metal watch strap links.-Package Includes: It contains 40pcs watch spring bars with a diameter of 1.5mm, and with 4 different length of 18mm, 20mm, 22mm, 24mm, each size have 10pcs bars, 1pcs remove tool is included. Please check the width of your watch lug or watch band before making a order.-Material: The quick release sping bars are make from 316L stainless steel, they will not get rust and erosion, it is lasting to use.Package:40x Quick Release Spring Bars1x Remove ToolItem Specifications:Material:316L Stainless SteelDiameter:1.5mmLength:18mm, 20mm, 22mm, 24mm