Item Type: Collet Chuck Holder Model: ER16A-150L Material: Chrome-molybdenum alloy steel Optional Chuck Rod Diameter: 12, 16, 20, 25mm Applicable Chuck Model: ER16A Shank Length: Approx. 150mm / 5.9in Package List 1 x Collet Chuck Holder 1.Duetomanualmeasurement,thereareslighterrors,thankyouforyourunderstanding.2.Thecoloroftheproductheadisshippedrandomly.3.Pleasenotethatthenewtypeandoldtypeofthisproductwillbesentrandomly,andmakesureyouwillnotmindbeforeordering. 1Applicable to deep hole processing, resolve to extend the depth of processing needs. 2Hardened and ground for better durability and performance. 3Straight and extended shank, the shank body is longer, the shank length is 150mm. 4The nut can direct tighten, high rigidity and strong clamping force. 5Made of high quality chrome molybdenum alloy steel, this chuck holder is durable.