The spring bar pins fit for 20 mm lug while 1.5 mm thickness fits most bands and watches, please measure the gap between the lugs of the watch before purchasing. Compatibility: 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. COMPATIBLE WITH ALL 20MM WATCH - Samsung galaxy watch 4 40mm 44mm/galaxy watch 4 classic 46mm 42mm, Galaxy watch 5 / 5 pro, Galaxy watch 6 /6 Classic / Galaxy Watch 7 40 44mm & galaxy watch active 2 44mm 40mm / galaxy watch 42mm / gear sport / gear s2 classic SM-R732/R735, Garmin Vivoactive 3 & Vivomove hr, Ticwatch E & Ticwatch 2, Moto 360 2nd Gen Men's 42mm, Pebble Time Round Large, Withings Steel HR 40mm, Fossil Q Gazer Hyrbrid, Huawei Watch 2 Smartwatch and so on. 316L High Quality Stainless Steel. 20mm Wide 1.5mm Thickness. PACKAGE CONTENTS: 8 * 20mm quick release spring bar + 1 * remove tool. 20mm Wide 1.5mm Thickness Quick Release Spring Bar Watch Pins. Perfect fit for Samsung galaxy watch 4 40mm 44mm and galaxy watch 4 classic 46mm 42mm & galaxy watch active / active 2 44mm 40mm / galaxy watch 42mm / gear sport / gear s2 classic SM-R732/R735, Garmin Vivoactive 3 & Vivomove hr, Ticwatch E & Ticwatch 2, Moto 360 2nd Gen Men's 42mm, Pebble Time Round Large, Withings Steel HR 40mm, Fossil Q Gazer Hyrbrid, Huawei Watch 2 Smartwatch.