A. This is a precision collet chuck tool holder designed for users with specific needs. The collet must be installed into the clamping nut first and then inserted into the chuck. It is easy to operate and efficient in use. B. Specifications: 1. Model: R8 - ER32 2. R8 spindle 3. Drawbar thread: 7/16 4. ER32 clamping range: 1 - 20 mm 5. Wrench: 1 piece, size 45 - 52 6. Applicable machine model: R8 special-purpose machine tool 7. Color: Silver + Black 8. Material: Metal 9. Size: 16 cm (6.3 inches) C. Packaging contents: 1 milling chuck extension rod D. Precautions: 1. When using this tool, measure the tool run-out. If the tool run-out accuracy exceeds 0.01 mm, it is advisable to stop cutting. 2. Try to keep the length of the tool protruding from the chuck as short as possible. If the tool protrusion is long, adjust the rotation speed, feed rate, or cutting amount. 3. If abnormal vibration or noise occurs during the cutting process, reduce the spindle speed and cutting depth until the situation improves. Only the above-mentioned packaging contents are included; other items are not included. Note that lighting and different displays may cause slight differences between the color of the item and the actual one. A measurement error of +/- 1 - 3 cm is allowed.