Features 1、Made of stainless steel material, these ball plungers are sturdy and durable. 2、Widely applicable for mechanical devices, clamps, molds, automatic machines, etc. 3、They are great parts for providing pressure and accurate positioning. 4、Easy to install and convenient to use. 5、There are total 5 pieces of ball plungers in one set that you may use for many projects. Specification Features: Made of stainless steel material, these ball plungers are sturdy and durable. 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. There are total 5 pieces of ball plungers in one set that you may use for many projects. Specification: Material: Stainless steel Type: M5*5, M6*6, M8*7, M10*9, M12*11.5 (Optional) Quantity: 5pcs Weight: 6g~34g / 0.2oz~1.2oz(approx.) Package list: 5 * Ball Plungers Package List