Application:The screw tap tapping chuck are suitable for machine taps,use for wind batches, electric batches, electric drills, etc. Safe ClipThe adapter square drive with built-in clamping clip,makes the tap die and socket adapter connection stronger and not easy to fall High Concentric RateThe tapping chuck for 1/4 hex shank 1.5-16mm diameter meet the same size machine tap,High Concentric Rate. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and well make you feel satisfied.