... &hardness 3high precision 4OEM/ODM accepted 5ISO9001:2008 certificate Sintered twist lock parts in powder metallurgy Features: 1High density and good ... trimmer etc. 2 Sintered GearsGears, Sprockets, Helical Gears, Bevel gears, Double Gears, Spur gear, Curved gear, Rack gear, Circular gear, Driving ...