{"product_id":"m39-x-4-threaded-backplate-adapter-no-holes-for-4-lathe-chucks-3900-3306","title":"M39 X 4 THREADED BACKPLATE\/ADAPTER FOR 4\" LATHE CHUCKS (3900-3306)","description":"\u003cp\u003eThreaded M39 X 4 Backplate\/Adapter for 4\" Lathe Chucks No bolt holes. Machining is required before mounting your chuck to ensure concentricity. For 3 \u0026amp; 4-jaw chucks. Made of high grade casting steel. Shipping Weight: 5 lbs\u003c\/p\u003e","brand":"MACHINEX","offers":[{"title":"Default Title","offer_id":52485444370743,"sku":"3900-3306","price":43.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/0082\/6679\/files\/3900-3306_3900-3304_2026_20a_2.jpg?v=1781639953","url":"https:\/\/machinexsupplies.com\/products\/m39-x-4-threaded-backplate-adapter-no-holes-for-4-lathe-chucks-3900-3306","provider":"MACHINEX Supplies","version":"1.0","type":"link"}