This round rubber stretch belt is specifically designed for use with sewing machines and can fit a wide range of machines using 13" to 15" belt. Also included are a bobbin tire and spool pin felt pad. This professional-grade belt is known for its easy installation and secure fit, providing smooth operation of the motor without any slippage or drag.
Belt will fit machines using a 13-to-15-inch belt and diameter is 3/16". Outside diameter upstretched is about 4".
Bobbin tire size: Outside Diameter of 29 mm, Inside Diameter of 15 mm, and a Thickness of 7 mm.