{"product_id":"upper-knife-x77668-001","title":"Upper Knife #X77668-001 for Brother 925D and 935D Serger","description":"\u003cp\u003eOn the Brother 925D and 935D sergers, the edge is trimmed by two blades working like scissors. X77668-001 is the upper one, the knife that moves down past the fixed lower blade on every stroke.\u003c\/p\u003e\u003cp\u003eWhen this blade dulls or chips, fabric gets chewed rather than cut: you will see ragged, fuzzy edges, threads dragged into the stitch, or layers that fold instead of trimming. Replacing the upper knife gives the lower blade a sharp partner again. You receive one upper knife; the lower blade is a separate part.\u003c\/p\u003e\u003ch2\u003eCompatible machines (2)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBrother:\u003c\/strong\u003e 925D, 935D\u003c\/p\u003e\u003cp\u003eSharpen-or-replace check: if a fresh lower knife still leaves a frayed edge, the upper knife is the worn half. Confirm your machine reads 925D or 935D before ordering.\u003c\/p\u003e","brand":"Sewlume","offers":[{"title":"Default Title","offer_id":68195743629400,"sku":"X77668-001","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/4092\/8600\/files\/upper-knife-x77668-001-1.jpg?v=1794541850","url":"https:\/\/sewlume.com\/products\/upper-knife-x77668-001","provider":"Sewlume","version":"1.0","type":"link"}