... ,Housings,Inserts,Pinions,Pins,Pistons,ShaftsIndustries ServedAerospace,Automotive,Electronics,Medical,Oil and Gas3.Material Available: Product namePrecision cnc parts / cnc partSteel1018 ... ,Nylon,TeflonOtherBronze,Brass,Hardened metal,Precious metal CNC aluminum cylinder with inner threaded in dongguan china