Check the listing for details. TRANSFORMER 4 HOLE MOUNT 3-3/8"X2-1/4"X2-3/4" OAD. Condition: Used, Made in United States. Listed at 25.00 USD. OAD: 3-3/8" X 2-1/4" X 2-3/4". 4 HOLE MOUNT. 3/16" WIDE.