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The Union Mfg Co No. 103 Keyed Drill Chuck features an integral shank mount designed for M-615 size drill chucks. Made by the reputable brand Union Mfg Co, this drill chuck is specifically designed for keyed drill applications. With its durable construction and precision engineering, this product provides reliable and efficient workholding for CNC, metalworking, and manufacturing processes.
The one has some damage to the set screw holes, it appears there are still some threads left.
These are sold as is untested
All 4 for one price
See photos for condition and makers, the small one appears to be unbranded
