{"product_id":"3-1-8-threaded-backplate-for-4-jaw-chucks-3900-4131","title":"3\" 1-8 THREADED BACKPLATE FOR 4 JAW CHUCKS (3900-4131)","description":"\u003cp\u003e3\" 1\"~8 Threaded Backplate for a 4-Jaw Chucks Fits most plain back chucks. Must be machined for concentricity. Made of high grade casting steel. Bolt circle is 2.6\". Number of bolt holes is 4. Assembly instructions included. Shipping Weight: 1.65 lbs\u003c\/p\u003e","brand":"MACHINEX","offers":[{"title":"Default Title","offer_id":52485295800631,"sku":"3900-4131","price":37.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/0082\/6679\/files\/3900-4131_3900-3210_2.jpg?v=1781636692","url":"https:\/\/machinexsupplies.com\/products\/3-1-8-threaded-backplate-for-4-jaw-chucks-3900-4131","provider":"MACHINEX Supplies","version":"1.0","type":"link"}