12 Inch disc 46 grit abrasive scrub brush. Alternate brush option that fits the Tennant 5400 (24"), T5 (24"). This is the most abrasive brush available for the Tennant 5400 and Tennant T5. Compare to Tennant 1220181 (Super Abrasive 46 Grit)

Fits Aftermarket Tennant 1220181 46 Grit (775931B)