Features: Made of stainless steel material, which can provides strength and offers good corrosion resistance in many circumstances. Widely applicable for mechanical devices, mechanical industry fasteners, pneumatic tools, clamps, molds, automatic machines, etc. They are great parts for providing pressure and accurate positioning. Easy to install and convenient to use. Hex socket thread is simple to fasten. There are total 10 pieces of ball plungers in one set that you may use for many projects. Specifications: Material: Stainless steel Head type: round head Groove type: hex socket Tooth: slim tooth Thread tolerance: 5g Nominal length: 6mm Thread: M8*30 Body Size(Dia*L, excluding ball): M8*30 Quantity: 10pcs Weight: 77g(approx.) Package Includes: 10 x Ball Plunger 1、Made of stainless steel material, which can provides strength and offers good corrosion resistance in many circumstances 2、Widely applicable for mechanical devices, mechanical industry fasteners, pneumatic tools, clamps, molds, automatic machines, etc 3、They are great parts for providing pressure and accurate positioning 4、Easy to install and convenient to use. Hex socket thread is simple to fasten. 5、There are total 10 pieces of ball plungers in one set that you may use for many projects