*Spring collet with two ends cutting fine flute, not easy to made cutter loosen
*Interior deviced with upper contracting to keep cutter never be contracted
*Enclosed one Spanner and Plastic case or wooden case for every set
*The body Screw is Ground.
*Push inward the steel ball inside of screw nut and firmly strong valid vibration - absorbent power
HANDY-AGE INDUSTRIAL CO., LTD.
11th Fl., No. 65, Anho Rd., Sec. 2, Taipei, Taiwan 106