Features: High Strength Material - High tensile heat forged from hardened steel and the rivet tipped nose drill is firm, durable and anti-up. Branded Sturdy Case - Comes with a colorful sturdy plastic case to store and classify the various styluses. Various options optional - Metric M3, M4, M5, M6, M8, M10 and M12 together 7 different sizes to choose from. Economical - Save money and replace the shell instead of buying a new riveter! Universal fit - fits standard nuts. Specification: Size: M3 / M4 / M5 / M6 / M8 / M10 / M12 (optional) < /p> Material: Alloy Steel Quantity: 1 Pack Storage: colorful label plastic box Packing List: 1 * M4 stylus 1 * storage box