If you have an Asetek Direct drive system, it comes with two seperate button mounts for power and emergency torque off. This design houses the original buttons in one sleek housing which can be mounted to 120mm aluminium profiles with the included mounting plate. Less clutter on the rig and both buttons in one convenient spot. Just melt in 3 M3 ruthex inserts in the bottom of the housing and mount with M3x8mm countersunk bolts. The mounting plate is made for M6 hardware to mount to your rig (also countersunk)