Features: Roasted Blue Fold knives Thumb Studs Crafted from premium alloy, these corrosions resistant push pins deliver exceptionals strength to weight ratio for long last durability in demanding knives applications. precise machined to exact specifications, these lightweight knives hardware components ensures perfect alignment with 4mm holes and 2.1-3mm blade thickness requirements. Ideal for professional knives makers and enthusiasts seeking reliability, fatigue reducing hardware for frequent use folding knives. Maintains structural integrity during rigorous outdoor adventures or daily carry scenarios where moisture resistance and weight optimization matter most. Users appreciate the fully recyclable alloy construction that combines high grade performances with sustainable choices. Specifications: Component: Alloy Size:Approx.4.5x6mm/0.18x0.24inch Suitable for use in the ranges of 4MM folding knives holes and blade thickness of 2.1-3MM. Suitable for a variety of tool repair and assembly scenario, it is ideal for professional technicians and enthusiasts. Package Includes: Package A 1pc Thumb Studs Package B 2pc Thumb Studs Package C 5pc Thumb Studs note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.