Specification Brand : Carr Lane Manufacturing BulletPoint1 : A: M12 BulletPoint2 : Initial End Force: 2.5 BulletPoint3 : Final End Force: 10 BulletPoint4 : C: 1/4 BulletPoint5 : D: 7/8 ItemName : CLM-12-HRP Carr Lane Manufacturing Hand-Retractable Plunger, Knurled Head, Standard Plunger: Thread M12 ItemPackageQuantity : 1 ItemTypeKeyword : ball-nose-spring-plunger Manufacturer : Carr Lane Manufacturing Material : stainless_steel MeasurementSystem : inch PartNumber : CLM-12-HRP ProductDescription : Spring-loaded plunger that locks in retracted position. To lock, pull knurled knob back and turn 90?. Standard plunger has a slight taper on plunger tip for easy alignment. Also available with a radiused Delrin plunger (slightly larger plunger diameter and lighter spring force). Available in steel or stainless steel. Made in USA. ProductSiteLaunchDate : 2013-12-20T18:16:38.325Z SupplierDeclaredDgHzRegulation : unknown