downhole back off spear

{"cid":"91191266","title":"API 7-1 Downhole Fishing Tools Releasing Spear Sliding Block Spear Back Off Spear","imgUrl":"https:\/\/img.chinax.com\/nimg\/e5\/a1\/0d9f436a8a3e81a971a073687fda-200x200-1.jpg","attrs":{"Price":"USD150-1000\/pc","Brand Name":"","Model Number":"LM-T Type, DLM-T Type","Minimum Order Quantity":"1 pc","Delivery Time":"15-30 days","Keywords":"Releasing Casing Spear","Mandrel OD":"3 5\/32''~8 1\/4''","Fish ID":"1 1\/2''~12 23\/32''","Certification":"API 7-1","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"300 pcs per month","Packaging Details":"Export Wooden Case","Application":"Fishing Tools for Oil Drilling","Material":"High-Grade Alloy Steel","Product Name":"API 7-1 Downhole Tool Releasing Spear Sliding Block Spear Back off Spear"}}

{"cid":"91198593","title":"High Performance Wear Resistant Casing Spear Downhole Fishing Tool with Reliable Release Function for Oil Well Workover","imgUrl":"https:\/\/img.chinax.com\/nimg\/c6\/c4\/3a5db35a560e0db0b7d36d4100d4-200x200-1.jpg","attrs":{"Delivery Time":"10-15 WORK DAYS","Place of Origin":"CHINA","Packaging Details":"WOODEN BOX","Supply Ability":"10 PIECES PER MONTH","Payment Terms":"L\/C,T\/T","Advantage":"High Performance,Oil well milling tools,Wear Resistant","Certification":"API"}}

{"cid":"91222851","title":"Oil Well Drilling Downhole Fishing Tools Releasable Reversing Spear","imgUrl":"https:\/\/img.chinax.com\/nimg\/89\/7d\/cf482e9e58fbe7f97fd9074fda3c-200x200-1.jpg","attrs":{"Price":"$ 1500 \/ Set","Brand Name":"HuiChi (HC)","Model Number":"TLM Series","Minimum Order Quantity":"1 Set","Delivery Time":"Within 15-30 Days","Certification":"API","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"500 Sets Per Month","Packaging Details":"Export Wooden Case And Wooden Palle Or According To Customers' Requirements.","Condition":"New","Warranty Of Core Components":"1 Year","Customized":"Logo \/ Packaging \/ Graphic","Machinery Test Report":"Provided","Material":"Alloy Steel","Thread Type":"NC REG","Catch Size (mm)":"All Sizes","Mandrel O.D (mm)":"89-203mm"}}