16-21mm Straight End Speidel Twist-o-flex Gold Tone Stainless Steel Watch Band 1368/37 Free Spring Bars Included! Adjustable Straight Ends, Twist-O-Flex Reduce hair pulling or pinching with Twist-O-Flexs bottom box and side edge design Lug size: 16-21mm Length: 6 inches - Stretches to larger sizes