Connect rotating tools to make work convenient and portable. Advanced handle: reduce vibration and provide better grip to achieve higher maneuverability and higher speed Wide range of applications: when the flexible shaft works with a straight die grinder, it is suitable for polishing, engraving, drilling, cutting, grinding, engraving, forming and grinding. High working efficiency, not easy to heat. Flexible and A great gift for DIY lovers, easy to use, making work easier, safe and reliable. 1. It is best to install the machine before using the flexible shaft. It be used after 15 minutes of idling at low speed. There be a little heat for 1-2 hours at the beginning of use, this is the normal wear time 2. When the test tube is working, please try to straighten it to extend the service life of the flexible shaft 3. Slight heating of the electric drill does not affect operation 4. The chuck head can only be used at low speed. The speed is controlled within 8000 revolutions. size:Clamping range: 0.3-6.5mm, handle length is about 150mm Connecting rod diameter: 6MM Material:metal colour:Gold+silver+blue Package Contents: 1 x Flexible Shaft 1 x Handpiece 1 x Chuck Key 1 x wrench Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.