Classic Keyless Drill Chucks (Tapered Mount) Keyless operation Self-tightening design Balanced For best accuracies, we recommend mounting Albrecht chucks on Albrecht Arbors Classic Keyless Drill Chucks w/ Thru-Hole Excellent for EDM use - EDM fluid passes through the chuck - Electrode passes through the chuck Keyless operation Self-tightening design Balanced Can be used as a standard drill chuck Thru-Hole allows the use of longer drill Classic Keyless Drill Chucks (Threaded Mount) Keyless operation Self-tightening design Balanced Dimensions Specifications