Drum: 419mm
Inner arc: 194.6/189.1mm
Width: 219.1mm
Thinkness: 17.6/11.1-18.2/15.2

It fits for black diamond. Dana. Eaton beake. Freuhuaf hobbs. K-b axle. Lufkin. Rockwell. Axle ror. York trailerd. Standsrd forge. Timpte. Trailmobile.

Specifications:
1. Noiseless, 100% asbestos free and excellent finishing.
2. Longlife time in toghest road condition.
3. Exceptional stopping power.
4. Lower dust level.
5. Works quietly.