auto trimming lockstitch s m gear

{"cid":"91220287","title":"Auto-Trimming Lockstitch Sewing Machine Gear Worms Quiet Transmission","imgUrl":"https:\/\/img.chinax.com\/nimg\/02\/18\/a62bf697196dd20a5b3a617fa3f4-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"SJ, DH","Minimum Order Quantity":"Negotiable","Delivery Time":"Sample order: 7 days","Certification":"ISO9001","Place of Origin":"Changsha, China","Payment Terms":"T\/T","Supply Ability":"Negotiable","Packaging Details":"According to customer's requirement","Material":"Steel","Shape":"Spiral","Accuracy Grade":"ISO 6-7 Grade","Heat treatment":"Carburizing,quenching, carbonitriding, high-frequency, quenching, tempering etc","Service":"Customized","Drawing Number":"WPC21\/C22\/C23\/C24","Number of Teeth":"28\/14\/28\/14"}}