Features: Compatibility with most Benchmade models. Black nitride coated stainless steel. Cylindrical tritium lamp for single-sided green light. Allen key for installation. Description: Benchmade fans, rejoice! Your favorite knife could get a whole lot cooler with the Glow Rhino Tritium Thumb Studs! Made with a luminescent hydrogen isotope, these thumb studs allow you to customize your knife and ensure you never lose your EDC in a dark place. Compatible Benchmade models: 535, 551, 552, 553, 556, 560, 570, 590, 698, 710, 730, 940 If you're a tinkerer, check out more of the Aftermarket Parts we carry!