10439 Large Adapter Cup
Large Adapter Cup for the RELS Adapter Plus System.
Dimensions: 5.25" O.D.
Spring is built in.
Used with the large backing plate to support thin walled larger drums and composite truck rotors.
This adapter cup is also available with the following sets:
47315 - Complete Adapter Plus System.
47373 - Deluxe Drum and Composite Rotor Set
More Information on the RELS Adapter Plus System available here.