Please Note: NO &amp;quot;1&amp;quot; for ER11-1mm・ NO &amp;quot;2&amp;quot; for ER11-2mm and so on.<br /><br />This is a Precision Collets For Professionals And Hobbyists Demanding Ease Of Operation And High Quality Work Results.<br /><br />Specification:<br />Color/Style: ER11<br />Material: High Grade 45 Carbon Steel<br />Total height: 18mm<br />Outer diameter(Max): 11.5mm<br />Gripping Range: 1mm・2mm・3mm・4mm・5mm・6mm・7mm<br />Fits metric shank size(s): For example・1mm Collet Fits 1mm metric shank・2mm Collet Fits 2mm metric shank.<br /><br />Features:<br />Made of high grade specially formulated spring steel.<br />Hardened and precision ground.<br />Built in self-Release design and tools will never get stuck in holder.<br /><br />Package Included:<br />1x ER11 Collet