This small magnetic socket wrench set with a case to store is easy to carry and use, and it is small enough to conceal in a big enough hollow crankset. Feature: Steel bits are durable and corrosion-resistant. Rotatable connecting junction for efficient work. Only 4.3in length, small enough to conceal in a hollow crankset whose diameter is more than 21mm. Magnetic socket is easy to fix the wrench in place. Convenient socket wrench kit which an be used in bike repair and household maintenance. Specifications: Material: Steel Color: Red / Blue / Black / Green (optional) Size: Approx.11 * 3.2 * 3.2cm / 4.3 * 1.3 * 1.3in Weight: Approx.112g / 4.0oz Package size: Approx. 13 * 5 * 5cm / 5.1 * 2.0 * 2.0in Package weight: Approx. 122g / 4.3oz Package List: 1 * Torque Wrench 1 * Phillips Screwdriver 1 * T25 Box Spanner 4 * Hex Wrench 1 * Storage Box