<p>High Precision Drill Chuck, Keyless, Steel, Ball Bearing, Capacity Max. 0.512 In., Capacity Min. 0.039 In., Mounting Size 33JT, Mounting Type Jacobs Taper, Nominal Capacity 1/2 In.</p> <p><br /><b>Features</b></p> <ul> <li>Bearing Type: Ball Bearing</li> <li>Item: High Precision Drill Chuck</li> <li>Material: steel</li> <li>Mounting Type: Jacobs Taper</li> <li>Chuck Type: Keyless</li> <li>Capacity Max.: 0.512&quot;</li> <li>Capacity Min.: 0.039&quot;</li> <li>Mounting Size: 33JT</li> <li>Nominal Capacity: 1/2&quot;</li> </ul> <p></p>