Size: 4mm x 4.5 mm x 11mm This carbon brush is compatible with Pfaff sewing machine motors 876/894/895/896/899/905/955 This carbon brush is made of carbon + metal which is durable and is an ideal replacement for old or worn carbon brushes Carbon brush wear is often the cause of poor motor operation Replacing the carbon brush can repair intermittent motors and restore the motor's electric braking function The package contains 10 pairs of sewing machine overlock carbon brushes, Manufacturer: OTOTEC