Features: Made of 304 stainless steel material, which can provides strength and offers good corrosion resistance in many circumstances. Widely applicable for mechanical devices, clamps, molds, automatic machines, etc. They are great parts for providing pressure and accurate positioning. Easy to install and convenient to use, simply press it in for fastening. There are total 10 pieces of ball plungers in one set that you may use for many projects. Specifications: Material: Stainless steel Body Size(Dia*L, excluding ball): 5mm*6mm Item Size(Dia*L, including ball): 5.5mm*7.5mm Quantity: 10pcs Weight: 9g(approx.) Package Includes: 10 x Ball Plunger Package List 1Made of 304 stainless steel material, which can provides strength and offers good corrosion resistance in many circumstances 2Widely applicable for mechanical devices, clamps, molds, automatic machines, etc 3They are great parts for providing pressure and accurate positioning 4Easy to install and convenient to use, simply press it in for fastening 5There are total 10 pieces of ball plungers in one set that you may use for many projects