iso 6 7 grade double helical gears

{"cid":"91212205","title":"ISO 6-7 Grade Double Helical Gears for Mining and Agriculture","imgUrl":"https:\/\/img.chinax.com\/nimg\/78\/4c\/8d7906f041b28455a3cc8c38aa12-200x200-1.jpg","attrs":{"Brand Name":"YIZGEAR","Minimum Order Quantity":"1 Sets","Delivery Time":"30 Days","Place of Origin":"CHINA","Payment Terms":"L\/C, T\/T","Supply Ability":"500 Sets\/Month","Packaging Details":"Plywood Crate","Quality Grade":"ISO 6-7 Grade","Heat Treatment":"Carburizing","Gear Profile Type":"Double Helical Gear","Manufacture":"Gear Milling","Center Distance":"Customized","Dimension":"As sample or drawing"}}