... , high quality Surface:smooth Certification: ISO9001:2000 OEM/ODM service Spur gearMaterials: stainless steel, carbon steel, cast iron, copper, brass etc ... .. Or selected by customers.Types: spur gears, bevel gears, helical gears, worm gear, rack and pinion ... description.Welcome to enquire and visit! precision casted and machined spur gear of stainless steel