Quick Release: Spring bars pins that are used to attach watch straps to the watch case. They have a small lever or knob at end that allows for easy installation and removal without the need for any tools DIY Use: band pin is very suitable for DIY enthusiasts andprofessionals . Easy to Use: Watch replacement band spring bar is reasonably designed and easy to operate. Even inexperienced users master the usage through learning and practice. Package :You will receive 2 pcs quick release lever spring bar pins,meet your different needs. High Quality Materials: Watch repair spring bar tool are made of high quality steel and materials, which are durable and not easily damaged and can be used for a long time. Size Chart: Compression Length :2.2cm/0.87inch 2cm/0.79inch Diameter :0.18cm/0.07inch Head Diameter:0.07cm/0.03inch Button Height :0.33cm/0.13inch Package Includes: 2Spring Bars Pins Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.