17MM 18MM 19MM 20MM 21MM 22MM 23MM 24MM 26MM. 22mm Lug Width with 20mm Buckle Width (22/20mm Strap). 20mm Lug Width with 18mm Buckle Width (20/18mm Strap). This strap is made from the highest quality PVC soft silicone rubber for comfort, flexibility, and durability.