um2 knob 3d printer springs

{"cid":"91220550","title":"Flexible and Durable 3D Printer PEI Spring Steel Sheet Frosted Magnetic Base Included","imgUrl":"https:\/\/img.ismap.com\/nimg\/51\/ed\/23710d48a4aa866a7c36ed3ed483-200x200-1.jpg","attrs":{"Price":"$12.99\/pieces 10-49 pieces","Brand Name":"U-POLEMAG","Model Number":"UPM-RM-310-310-0.4","Minimum Order Quantity":"10 pieces","Delivery Time":"within 7 days","Place of Origin":"Zhejiang, China","Type":"Soft","Composite":"Ferrite Magnet","Shape":"Sheet","Application":"Industrial Magnet, for 3D Printer","Tolerance":"\u00b11%","Processing Service":"Cutting, Moulding","Grade":"Rubber magnet","Product Name":"PEI Spring Steel Sheet","Size":"310 x 310 x 0.4 mm","1st Layer Material":"PEI Printing Surface","2nd Layer Material":"Spring Steel Sheet","3rd Layer Material":"Magnetic Based","Max Work Temp.":"130 C","Characteristic":"Flexible & Removable","Advantages":"Never Rust & Never Warp & Free Clean","Available":"Almost all Filaments","Packaging Details":"Foam + carton + pallet for PEI sheet","Port":"Shanghai","Supply Ability":"100000 Piece\/Pieces per Month"}}

{"cid":"91211316","title":"RC Connectors DIP SMT Threaded POGO Pins Spring Loaded Contact 12A","imgUrl":"https:\/\/img.ismap.com\/nimg\/5c\/50\/8f807ffb7f51ca227a6e27a247ee-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"TX","Minimum Order Quantity":"30K","Delivery Time":"17-22 Days","Certification":"ICAS ROHS ULS GS REACH","Place of Origin":"China","Payment Terms":"T\/T, Western Union, MoneyGram","Supply Ability":"1000000Kpcs","Packaging Details":"Vacuum Reel\/ PVC Bag","Keywords":"Pogo Pin Spring Contact Smd","Connector type":"Straight","Current Ration":"12A","Tolerance":"+-0.01mm","Material":"Brass","Application":"PCB","Features":"Fire\/flame retardant, Stable conductivity","Plunger plating":"Gold Plating Over Nickel Plating"}}

{"cid":"91169909","title":"Machine spring","imgUrl":"https:\/\/img.ismap.com\/nimg\/53\/5a\/83a89856ba2aea2448f68aab3157-200x200-1.jpg","attrs":{"Minimum Order Quantity":"10pcs","Delivery Time":"5-7 days","Place of Origin":"China","Payment Terms":"TT\/West Union"}}