4 module 77t double helix gear

{"cid":"91212205","title":"DIN 18CrNiMo7 Steel 4 Module 77T Double Helical Gears For Gearbox","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/87\/75\/60d7a2e8fc4d80aaedc5221a12cc-200x200-1.jpg","attrs":{"Price":"$600\/ Piece","Brand Name":"YIZGEAR","Model Number":"DB22082203","Minimum Order Quantity":"1 Piece","Delivery Time":"75 Days","Place of Origin":"CHINA","Payment Terms":"L\/C,D\/P,T\/T,Western Union","Supply Ability":"100 Pieces\/Month","Packaging Details":"Plywood Crate","Material":"DIN 18CrNiMo7","Helix angle":"31\u00b0","Hardness":"58-62 HRC","Normal Module":"4","Transverse Module":"4.6667","Face Width":"50"}}

{"cid":"91174815","title":"Precision Custom Double Helix Gear Shaft With Retracting Grooves","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/a3\/47\/b53768e4ce5e3b0858af962d44d3-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"LBS","Model Number":"According to drawings","Minimum Order Quantity":"1 set","Delivery Time":"20 to 30 working days","Place of Origin":"Hebei\uff0cChina","Payment Terms":"L\/C, T\/T","Supply Ability":"5000 Pieces\/Sets Per Month","Packaging Details":"Export standard wooden case","Certification":"DNV, ABS, GL, LR, BV, CCS, RINA, NK,","Port":"Tianjin China","Material":"carbon steel,alloy steel","Processing Type":"Forging","Surface":"Grinding","Heat Treatment":"Anneal, Quenchining & Tempering......"}}