Item Type: Collet chuck tool holder <br>Model: BT40-ER20-100 <br>Clamping Range: Approx. 1-13mm / 0.04-0.5in <br>L Length: Approx.100mm / 3.9in <br>Material: 40cr<br>1、Made of 40cr alloy steel, the product can withstand high pressure and explosion. <br>2、The collect chuck tool holder is featured with quality assurance, long service life. <br>3、With excellent price and high cost performance, the product is a good choice for you. <br>4、The tool is characterized by high accuracy and excellent performance. <br>5、You can use this collect chuck tool holder on various kinds of CNC milling machines.1 x&nbsp;Collet&nbsp;Chuck&nbsp;Tool&nbsp;Holder Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.