Honeywell Thor VM2 Reference Manual page 19

Additionally, the kits for the Thor VM2 with an integrated keyboard include:
Thor VM2 Keyboard Mounting Bracket
RAM Ball (Size C) with hardware (nuts) to attach RAM ball to Keyboard Mounting Bracket
RAM Arm (Size C)
Keyboard Mounting Plate with RAM Ball (Size C) with hardware (screws and washers) to attack
Keyboard to Mounting Plate
2-3