Specification Brand : Cryfokt BulletPoint1 : Using excellent workmanship to bring a smooth , which will your hands in operate BulletPoint2 : Using strict quality control and quality assurance to guarantee a long service life BulletPoint3 : ER16‑A chuck allow you to choose according to your needs BulletPoint4 : This collet chuck toolholder is suitable for milling and lathe accessories BulletPoint5 : Made of 40cr alloy steel material, which can withstand pressure and explosion IncludedComponents : No ItemName : 100mm / 3.9in CNC Toolholder 40cr CNC Toolholder Tool Holder Set Drilling Machines CNC Engraving Machine Milling Machines Engraving Machine ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 20 centimeters ItemPackageDimensions_Width : 15 centimeters ItemTypeKeyword : workholding-collets Manufacturer : Cryfokt ModelName : Cryfoktasuhb5ctio ModelNumber : Cryfoktasuhb5ctio PartNumber : Cryfoktasuhb5ctio PowerSourceType : ac/dc ProductDescription : 1. Made of 40cr alloy steel material, which can withstand pressure and explosion 2. Using strict quality control and quality assurance to guarantee a long service life 3. ER16‑A chuck allow you to choose according to your needs 4. Using excellent workmanship to bring a smooth , which will your hands in operate 5. This collet chuck toolholder is suitable for milling and lathe accessories