Wide Applicability: When the flexible shaft is used with a straight die grinder, this flexible shaft extension chuck can be used for polishing, engraving, drilling, cutting, grinding, shaping, sanding and more. Steady Operation: The shaft joint of this flexible shaft extension chuck has high concentricity, precise engraving is not easy to shake, stable operation and high safety. Easy to use: The extended collet adapter is connected to the tool, and the flexible shaft makes the work handy Strong Grip: This flexible shaft extension chuck features an advanced handle design that reduces vibration to prevent fatigue and provides better grip for greater maneuverability and higher speeds. Excellent Material: This flexible shaft extension chuck is made of high-quality material, made of rubber, ABS and aluminum alloy, with perfect workmanship, high working efficiency and not easy to heat up. Specification: Item Type: Shaft Extension Chuck Material: Rubber + ABS + aluminum alloy Purpose: Suitable for electric drill grinder tools Chuck Clamping Range: Approx. 0.3 ~ 6.5mm / 0.01 ~ 0.26in Joint Diameter: Approx. 6mm / 0.24in Maximum Speed: 10000 RPM Package List: 1 x Flexible Shaft 1 x Handle 2 x Wrench period.