... Dead center, Half-notched center, Carbide half-notched center, Carbide center, Precision light-duty center, Precision light-duty live center, Medium- ... manufacture and marketing of machine tool accessories.Production includes milling chuck series,CNC tool series,collet series,boring heads ... ,er nuts,centers,mores taper sleeves,drill chucks,precision tool vises,parallel block series,V-block clamp,etc. ...