Rotation Speed:
<br />22,000~27000rpm
<br />2. Ratio 1:1
<br />3. With external cooling
<br />system
<br />4. Bur applicable:∮
<br />2.334~2.355
<br />5. 4 hole
<br />6. Noise:≤70dB<p> <b><b><img src="https://contestimg.wish.com/api/webimage/5541e2dd2a52d70c270f5c31-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5541e2dd2a52d70c270f5c31-1-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5541e2dd2a52d70c270f5c31-2-original.jpg></b></b></p>