Thumb Studs for Benchmade Bugout 535 and more. Premium quality Replacement Anodized Titanium Thumb Stud Set. The great replacement thumb studs fit for Benchmade BUGOUT 535 Series Knives, also fit for 535S, 535GRY-1, 535SGRY-1, etc. With these replacement Thumb Studs, you can easily revitalize and refresh your old or damaged knives. This DIY accessory thumbstuds allows you to upgrade your knife's functionality and make it stand out with minimal effort and time Designed to flawlessly fit for Benchmade 535 Bugout and other compatible models. These screws are guaranteed to enhance the functionality and appearance of your knife Offering superior protection against rust and corrosion. The sleek finish adds an extra layer of durability while enhancing the aesthetic appeal of your knife. Choose from a variety of colors to match your style and personality. no