Ⅰ. Upgrade your serger machine with a Serger Machine Blade, crafted from durable metal for strength and durability. This accessory is designed for efficient sewing and has a long service life, making it a replacement for old or damaged blades. Ⅱ. Key Features: · Durable Metal Construction: Built to last, our serger blade is made of steel for increased strength and wear resistance. · Smooth and Scratch-Free Performance: Ensures smooth operation and easy installation, saving you time and effort. · Universal Compatibility: Compatible with a variety of serger models, including BABYLOCK, CONSEW, ELNA, and SERGE-MATE, making it a convenient solution for a variety of sewing needs. · Efficient Performance: Suitable for heavy-duty sewing tasks, our serger machine blade delivers reliable and effective results, helping you complete projects quickly and efficiently. · Easy Installation: Designed for easy installation and use, our serger machine blade is a hassle-free solution for your sewing needs. Ⅲ. Specifications: · Material: Metal · Upper knife code: 412585 Lower knife code: 550449 Installation: compatible with BABYLOCK, CONSEW, ELNA and SERGE-MATE serger models Upper knife size: 4 x 0.8 cm / 1.57 x 0.31 inches Lower knife size: 2.5 x 0.8 cm / 0.98 x 0.31 inches Ⅳ. Package includes: 1 x upper knife 412585 1 x lower knife 550449