Adjustable shelf bracket for up to 3 different depths For use with the AP-DM shelf standard (sold separately) Locking tab feature for additional retention Can be used with glassWARNING: This product can expose you to chromium, nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65WARNINGs.ca.gov.