Walbro Throttle and Choke Arms (2 pack).
These are beautifully CNC machined one piece billet aluminum. These have double locking set-screws to secure the arms to the carburetor shaft.
Each package contains 2 arms. The dimensions of each arm are as follows:
Choke Arm - 3/16" inside diameter, 5/8" high. Arm length is 13/16" long.
Throttle Arm - 5/32" inside diameter, 5/16" high. Arm length is 13/16" long.
Here is a pic of the Carb Arms installed on a Walbro Carburetor: