Specification Brand : Accusize Industrial Tools BulletPoint1 : Size from 2 mm to 13 mm by 1 mm. Range of 0.039''. Total 12 ps/set. BulletPoint2 : Made from alloy spring steel and hardened to HRC 44-48 BulletPoint3 : All collets are checked its runout individually on 4 points on a testing rod BulletPoint4 : For size 3.0mm and larger the runout is 0.0003'' (0.008mm). Under size 3.0mm the runout is 0.00059'' (0.015mm). BulletPoint5 : In fitted strong Aluminium Box ExternallyAssignedProductIdentifier1 : 641799805041 ExternallyAssignedProductIdentifier2 : 0641799805041 IncludedComponents : Storage Case ItemName : Accusize Industrial Tools Metric Er20 Collet 2mm to 13 mm by 1 mm Er-20 Collet 12 Pc, 3350-0583 ItemPackageDimensions_Height : 6.8 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 10.8 centimeters ItemPackageQuantity : 1 ItemShape : Metric Size ItemTypeKeyword : workholding-collets Manufacturer : Accusize Co., Ltd. Material1 : Spring Steel Material2 : Metal ModelNumber : 3350-0583 NumberOfItems : 1 PartNumber : 3350-0583 ProductDescription : Metric ER Collet 2mm to 13mm by 1mm ER-20 Collet 12 Pcs/Set in Fitted Strong Aluminium Box, #3350-0583 Size from 2 mm to 13 mm by 1 mm Total 12 ps/set Features: Range of 0.039'' Made from alloy spring steel and hardened to HRC 44-48 All collets are checked its runout individually on 4 points on a testing rod For size 3.0mm and larger the runout is 0.0003'' (0.008mm) Under size 3.0mm the runout is 0.00059" (0.015mm) In fitted strong Aluminium Box ProductSiteLaunchDate : 2013-12-16T00:00:00.000-08:00