1.Made of carbide&steel material 2.Used for boring,milling,drilling,etc 3.Clamping ability,high precision product details: COLLET ROUND(Unit ... 90% of products are exported to Japan and Southeast Asia. High precision, high-quality ,short delivery is our character. We are looking forward ... and orders. (Non-standard: please send us sample or drawings) 2-jaw chuck,hot! high precision,2-jaw chuck