SWISS REIMAGINED Quick Release Spring Bar with Cylindrical Push Button for Watch Band (Set of Two) - 1.8mm Diameter PREMIUM SPRING BARS FOR ATTACHING WATCH BAND WITH YOUR CASE OR BUCKLE - the Spring Bar Body is Manufactured from 316L Stainless Steel and the Spring is Manufactured in Tempered 304 Stainless Steel EXACT AND SECURED FIT - These Spring Bars are 1.8mm in Diameter at Their Widest Point and Designed to Fit a Watch or Buckle Where the Measurement Between the Band Attachment Lugs is 18mm - This Will Ensure Sufficient Tension In The Spring To Hold Your Watch Band to Your Watch Securely ATTACH/DETACH WITH EASE - Specialized for Quick Release Spring Bar Pins - Can Only Be Used With Specifically Designed Watch Bands - Ensure Your Strap Is Suitable For These Spring Bars PRECISE MEASRUEMENTS - The Pin Ends are 0.8mm in Diameter and Provided They are Installed Correctly Will be Locked In Place Between the Watch Lugs or Buckle Lugs with Approximately 4.4 Newtons or 1 Pound of Force Through the Tension in The Spring VARIOUS SIZES TO CHOOSE FROM - Cylindrical Push Button Lever at One End for Easy Installation and Removal of your Watch Bands - Not Sure of the Size You Need - The Lug Measurement Tool by SWISS REIMAGINED (ASIN:B00RT0D32Q) Will Provide The Answer You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!