Features: 1. The thread adapter is made of alloy steel, high hardness, wear resistance and long service life. 2. The tapping chuck for 1/4'' hex shank 4mm 5mm 6mm 8mm 10mm 12mm 14mm diameter tapping 3. The square drive adapter with built-in clamping clip makes the connection of the die adapter and the connector stronger and not easy to fall off 4. The tapping chuck is suitable for machine taps, wind batches, electric batches, electric drills, etc. Description: 7pcs M4-M14 Tap Socket Adapter 1/4 Inch Hex Shank Machine Tap Threaded Adapter Screw Adapter for Electric Drill Specifications: Material: Alloy Steel Color: Black Shank: 1/4 Inch Hex Shank Size: 4mm 5mm 6mm 8mm 10mm 12mm 14mm Suitable for: M4, M5, M6, M8, M10, M12, M14 Mechanical Tap M4*50L Tap Sleeve Suitable for 3MM machine taps on opposite sides Net Weight: 16g M5*50L Tap Sleeve Suitable for 4MM machine taps on opposite sides opposite sides Net weight: 16.2g M6*50L tap sleeve insert clamping pad Suitable for 4.8mm machine