Specification Brand : Garosa BulletPoint1 : Made of carbon steel material, these ball plungers are sturdy and durable. BulletPoint2 : Widely applicable for mechanical devices, clamps, molds, automatic machines, etc. BulletPoint3 : They are great parts for providing pressure and accurate positioning. BulletPoint4 : Type: M4*6, M4*8, M4*10, M4*12 (Optional). Easy to install and convenient to use. BulletPoint5 : There are total 20 pieces of ball plungers in one set that you may use for many projects. Color : M4*6 DriveSystem : External Hex ExteriorFinish : Steel ExternallyAssignedProductIdentifier1 : 736342638754 ExternallyAssignedProductIdentifier2 : 0736342638754 ItemName : 20Pcs Hexagon Socket Spring Ball Plunger Carbon Steel Screwdriver Type M4(M4*6) ItemPackageDimensions_Height : 15.2 centimeters ItemPackageDimensions_Length : 2.2 centimeters ItemPackageDimensions_Width : 12.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : ball-nose-spring-plunger Manufacturer : Garosa Material : Carbon Steel MeasurementSystem : Metric MetalType : Carbon Steel PartNumber : Garosa4m2tnaw3h9-01 ProductDescription : Specification: