Features: _x000D_ Connect with rotary tools, make work handy and portable. _x000D_ Advanced handle: Reduces vibration to prevent fatigue and gives a better grip for greater maneuverability & high speed _x000D_ _x000D_ Wide application: Apply to polishing, engraving, drilling, cutting, grinding, carving, shaping and sanding when flex shaft works with straight die grinder. _x000D_ High working efficiency, not easy to heat. flexible and endurable _x000D_ Excellent Gift for DIY Enthusiasts, simple to use and make the job easier, safe and reliable. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Handle Material: aluminum alloy _x000D_ Connecting rod diameter: 6MM _x000D_ Chuck size: 0.5-6mm _x000D_ Grip handle diameter: 26MM _x000D_ Maximum speed: 10000 RPM _x000D_ Flex shaft length: approx.100cm _x000D_ Total length: approx.110cm _x000D_ Weight: Approx.592g/20.9oz _x000D_ _x000D_ Instructions: _x000D_ 1. It is better to install the machine before using the flex shaft. After idling for 15 minutes at a low speed, it will be used.Starting to use 1-2 hours will have a little heat, is normal wear period _x000D_ 2. Try to stretch the tube straight when it's on working, which can extend the service life of the flexible shaft _x000D_ 3. Slight heating on the electric drill does not affect the operation _x000D_ 4. The chuck head can only be used at a slow speed. The speed is controlled within 8000 revolutions. _x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x Flexible Shaft _x000D_ 1 x Handpiece_x000D_ 1 x Chuck Key _x000D_ 1 x wrench