1. standard: API 7-1 non-magnetic drilling stabilizer 2.material:HHF choose the AISI 4145H MOD alloy steel as the material to provide customers with integral/ spiral stabilizer with the most advanced machines( 2500t forging press , CNC lathes, milling machine and so on .) . 3.We can produce the max outer diameter of the stabilizer is 36â??â??. HHFâ??s nonmagnetic 4.products are much higher than API standard in mechanical properties and permeability.We can also supply the OEM service.