1.high precision. 2.high qulity. 3.Competitive price Drill chuck with key or keylessDrill Chucks, Key-type, Heavy duty, used for Bench Drills or Drilling and Milling machines.Our drill chuck include:JT hole, B hole, or threaded hole connection0.5-6mm0.5-8mm1-10mm1-13mm3-16mm5-20mmGrade: P,D,MModelCapacity (mm)MountsD(mm)L1(mm)L2(mm) J2160.6-6B1030.35039.5J21101-10B1243.469.754J21131-13B1653. ...