RT-1109 
Rotake 1/4" Air  Die Grinder.
★ Step less speed control knob switch:- According to different purposes, choose different speeds to meet different needs
★ Air inlet and exhaust port:- Air inlet filter design, effectively filter air impurities, humanized annular exhaust design, more environmentally friendly.
Features.
Suitable for precision machining, smoothing, chamfering, deburring, grinding, polishing, engraving.
Variable-speed throttle ramps up to maximum RPM, Built-in air regulator for precise speed control
The 90-degree head allows flexibility in many applications, for reaching tight or angled grinding.
Sealed ball bearing design keeps out contaminants promoting smooth operation.
Specification.
Inlet Connection Diameter:- 1/4".
Working pressure:- 6.2 ATM.
Approx RPM:- 20,000 RPM.
Weight, kg:- 0.56 kg
✔ Made in China - Good Quality