Specification Brand : FOMASP BulletPoint : 5pcs solid carbide Tialn coated #6 center drills 7/32x1/2x3" #530-CTN-6 BulletPoint1 : High-quality:Use the high carbon bearing steal,heat treated rigidity is HRC44-48 BulletPoint2 : High-precision:pring Collets 0.0003"-0.0005" T.I.R. BulletPoint3 : Clamping range:According to size ±0.02“ BulletPoint4 : Size:ER25 --- 1/4" & 3/8" & 5/16" & 1/8" & 3/16" & 7/16" & 1/2" BulletPoint5 : Application:Suitable for boring, milling, drilling, tapping, engraving, CNC, spindle machines, and other processing hold BulletPoint6 : About Us - LittleMachineShop.com is a small U.S. business specializing in sourcing and selling quality machines, tooling, spare parts, and accessories for home shop machinists and small machine shops. Additionally, we sell upgrades and accessories for many of the leading brands. Whenever possible, we work with, and promote, other small US machinists and machine shops who sell innovative products. With direct US based customer support from our knowledgeable team, we stand behind all our products. BulletPoint7 : Contact Us: As home shop machinist and consumers, we understand how information aids in your buying decision. We also know how frustrating it is if you cannot contact a company. If you have any questions, please feel to reach out to us and we would be happy to help. Should you have any doubts before buying a product, contact us to discuss compatibility or features. In the event you need to return something, we also ask for the courtesy of a contact to see if we can eliminate any possible issues. Capacity : 20 millimeters CompatibleDevices1 : Drilling Machine CompatibleDevices2 : Lathe CompatibleDevices3 : Milling Machine CompatibleDevices4 : Grinding Machine ExternallyAssignedProductIdentifier1 : 0000220265852 ExternallyAssignedProductIdentifier2 : 000220265852 FinishType : Titanium Aluminum Nitride IncludedComponents : Collet ItemName : FomaSP ER25 ER Collet Spring Collet(Concentricity:0.015) fit for DIN6499 (3/8") ItemPackageDimensions_Height : 10.1092 centimeters ItemPackageDimensions_Length : 3.302 centimeters ItemPackageDimensions_Width : 8.509 centimeters ItemTypeKeyword : workholding-collets LockType : Manual Manufacturer : BP Material : High Carbon Steel Material1 : Metal Material2 : Alloy Steel ModelName : ER25 ModelNumber : 3/8" NumberOfItems : 1 PartNumber : 3/8" PowerSourceType : ac/dc ProductDescription : FOMASP Professional parts supplier ProductSiteLaunchDate : 2022-08-17T06:01:45.229Z Size : 1/2" 202-5545 UnitCount : 1 UnspscCode : 24101600