{"product_id":"threaded-m39-x-4-backplate-adapter-for-6-3-or-4-jaw-lathe-chucks-3900-3339","title":"THREADED M39 X 4 BACKPLATE \/ ADAPTER FOR 6\" 3 OR 4 JAW LATHE CHUCKS (3900-3339)","description":"\u003cp\u003eThreaded M39 X 4 Backplate\/Adapter 6\" Lathe Chucks No bolt holes. Machining is required before mounting your chuck to ensure concentricity. For 3 \u0026amp; 4-jaw chucks. Shipping Weight: 6.2 lbs\u003c\/p\u003e","brand":"MACHINEX","offers":[{"title":"Default Title","offer_id":52485444305207,"sku":"3900-3339","price":94.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/0082\/6679\/files\/3900-3339_3900-3304_2026_20a_3.jpg?v=1781639950","url":"https:\/\/machinexsupplies.com\/products\/threaded-m39-x-4-backplate-adapter-for-6-3-or-4-jaw-lathe-chucks-3900-3339","provider":"MACHINEX Supplies","version":"1.0","type":"link"}