5/16" I.D. X 1-1/4" O.D. Power Milling Chuck Collet Without Length Adjusting Screw. Yg1 Part # My303. Yg1 Power Milling Chuck Collets Are For Use With Yg1 Power Milling Chucks. Be Sure To Match The Outside Diameter Of Your Milling Chuck Collet To The Nominal Inside Diameter Of Your Power Milling Chuck. Yg1 Power Milling Chucks Offer Enormous Clamping Forces And Extreme Concentricity Making Them Suitable For Heavy Duty Cutting To Finish Milling.

• YG1 1-1/4" O.D. Milling Chuck Collets Are Offered For These End Mill Sizes: 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8" & 1"

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