Toro 23.00 Inch OEM Shoulder Roller Assembly. This roller has a 3.00 inch diameter. This Assembly comes with a Wiehle shoulder roller, roller shaft, oil seal, ball bearings, inner seal, retaining ring, outer seal, roller washer, grease fittings & grease. This roller is smooth, unlike the Wiehle roller that has groves built in. Toro OEMs are created to keep your equipment up and running with the highest quality parts. To verify that this fits your Toro equipment, please do a model & serial number search.