Carriage Trolley for Wayne Dalton Quantum, Classic Drive, Wizard and Challenger Chain Drive Openers.

Carriage Trolley

Color: Silver

Amarr 1000, 1500
Challenger CH-1000, 9300, 9500, 9300M, 9500M
Allstar Challenger 9300, 9500
Challenger GLE, SE
Wayne-Dalton Wizard 2113, 2115
Wayne Dalton Quantum 3212, 3213, 3412 and all other models using 303 Mhz frequency for remote controls
Wayne Dalton Classic Drive 3012, 3016, 3512, 3412 and all other models using 303 Mhz frequency for remote controls

To make sure, look at your trolley.  If it is silver in color, this is the correct part