Specifications: Material: stainless steel/ABS Type optional: 2 kinds optional Item weight: 45g / 1.59ounces Package weight: 80g / 2.82ounces Item size: 70 * 40 *15mm / 2.76 * 1.18 * 0.59in Package size: 80 * 50 * 20mm / 3.15 * 1.97 * .79in Features: Minimize the risk of slipping and scratching. Water resistant and will not easily get rust or damaged. Tips can adjust from 10mm to 50mm to fit different size watch cases. Compact and small size, makes it very convenient to carry. Great for waterproof watch case opening, batteries replacing and watch repairing.