Compatibility - Designed to fit any watch that uses either standard 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm spring bars. To determine the right width, measure the width between watch lugs at the point where the band attaches. Please check instructional images on the left of the page. Choose your SizeSpring Bars are available in sizes to Fit Lug Sizes From 18mm to 25mm in 1.5mm Body Diameter. Please check instruction images on the left of the page. Easy to InstallDouble shoulders/Flange at each end allow for quick and easy gripping for insertion and removal using a spring Removal bar tool which is included. MMOBIEL Watch Band Heavy Duty Spring Bar, 4 Pack Stainless Steel Watch Band Pins, Choice of Widths incl Removal Tool. High Quality MMOBIEL Product! All parts tested! Item in stock!