JaysAndKays 'Fixed Lugs' Strap Adapters for Suunto Core, Screwbar End JaysAndKays 'Fixed Lugs' are immobile to resolve lug 'standing'. Properly adapts 5-ring Zulu, NATO or any other 1-piece straps. Reduces likelihood of screws loosening. Made of aluminum with hard black anodized finish. Stainless Steel screwbars with black PVD finish.