Use8 pieces 1/2 inch hex bit sockets, fit for 1/2 inch ratchet / impact gun / crusher / power bar etc. Each bit has its size printed on the bit itself, so you can easily identify it after removing a handful from the chassis. Comes with a plastic compatible for case for easy storage and transport, convenient to use. Hardened and tempered, professional tool for commercial or occasional use.Technical DataDrive size: 1 / 2 inch (approx.) Sizes: H5 / H6 / H8 / H10 / H12 / H14 / H17 / H19 ) Material: Chromium-molybdenum steel Color: Black (as pictures show) Measuring system: metricSpecificationIncluded in the scope of delivery: 8 * Hexagon Socket Inserts 1 * Plastic Enclosure warranty: one year warranty for any manufacturing defect Condition: completely new / 100% new / fully functionalNoticePlease allow slight manual measurement deviation for the data. If there are any discrepancies, please contact us. If you have any further questions, please contact us. Box Color:The color of the box is random