This is a Brand new High Quality Softer Black V-Belt For many Singer vintage models: 15 class 15-30, 15-86, 15-87, 15-96, 15-97 66 series (Spoked hand Wheel only) 127, 128, 223, 227, 237, 239, 240,241, 242, 247, 248, 250, 251, 252 ,257, 259, 262, 285, 285K, 288, 293B, 611, 900, 1247, 1263, 1280, 1288, 1802, 1803, 1812, 1852, 1853, 1862, 1872, 1873, 2302, 2303, 2304, 2315, 2330, 2404, 2430, 2440, 2502, 2503, 2504, 2505, 2515, 2517, 2530, 2543, 3100, 3102, 3130, 3140, 3270, 3314, 3317, 3343, DX17 part # 196388 replace belt # 193066. 13 3/4" circumference. Black belt with ridges for better traction and less strain on motor. If you have a Singer 66 series model , make sure it has a Spoked hand wheel (Not Solid)