Features: It is about 250 grams per package, meeting your needs definitely.It is specially made to work with tumbler and polisher. Pins are prepared and made from stainless steel that will be attracted to the movement of the magnets and yet not rust like steel shot media.Tiny pins reach into the tightest areas. The pins having a smaller diameter provide a lighter weight and less impact on the surface during the finishing operation. Specification: Material: Stainless SteelColor: Shown As PicturesDiameter: Approx. 0.5mmLength: Approx. 5mmItem Weight: 250gType: Jewelry Making Tool SetsPackage Weight: 259gPackage List:1 * Pack of Polishing PinNote:It is reusable, use with care. And, When it is not used, please clean it and keep it dry.