This roller brush is for Eureka canister vacuums with power nozzles. This measures approximately 13 inches long. This part should be replaced every 3-4 years, or whenever the brushes, or bearings wear out. This roller brush will fit the following Eureka model numbers;1243, 1244, 1245, 1246, 1248, 1249, 1254, 1255, 1259, 1271, 1260, 1261, 1265, 1266, 1267, 1268, 1269, 1273, 1275, 1276, 1277, 1278, 1279, 1285, 1286, 1287, 1288, 1289, 1290, 1620, 1625, 1630, 1640, 1650, 1660, 1663, 1680, 1730, 1731, 1740, 1743, 1745, 1746, 1750, 1756, 1757, 1758, 1760, 1761, 1763, 1770, 1773, 1777, 1778, 1783, 1784, 1788, 1764, 1774, 1790, 1791, 1810, 1820, 1830, 1833, 1840, 1860, 1880, 3916A, 3930A, 3930B, 3942A, 3948A, 3972A, 3977B, WWP9500.If you're model number is not listed here, and you would like us to look up your model to find the correct part, please get the model number from your vacuum cleaner (usually located on the bottom, or back of the vacuum cleaner) and contact us. We'd be delighted to help you find the correct part for your vacuum.