This is the Genuine Eureka Sanitaire commercial vacuum 12" Vibragroom II brush roller. This is the all steel brush roller found in the popular 12" Sanitaire vacuums.
Dimensions: 12"W x 1-1/2"D
Model Number 53270
12" brushroll with hex ends and ball bearings fits: SC689A,SC684F,SC886E,SC887B,SC888H
Metal Chrome with E-52282-4 - brushstrips
E-26059A