Brother Side Cutter Foot, SA177 PROFESSIONALLY FINISH SEAMS: Use your sewing machine to create the perfectly cut and finished edges of a serger ONE-STEP FINISHING: The built-in blade trims away your excess seam allowance while you sew a zigzag or overcasting stitch around the edge of your fabric, all at the same time SUPERIOR QUALITY: Engineered for precision, this foot is made of strong metal and smooth durable plastic with a blade that delivers sharp, clean cuts GENUINE BROTHER ACCESSORY: Specially designed and manufactured for optimal results with Brother sewing machines FOR USE WITH LOW-SHANK SEWING MACHINES: Fits most brands of low-shank sewing machines. See your product manual for specifications