The Galileo HUD Hands-Free Computer Mask Holder Kit contains a mask mount and zip ties to securely attach a HUD dive computer onto a standard SCUBAPRO dual lens mask. The Mask Holder Kit adapts the following dual lens masks to hold the HUD dive computer: Flux Twin, Scout, Spectra, Spectra Mini, Synergy Twin and Synergy 2 Twin. It is also compatible with the Currents Adult Mask Combo and Ecco Mask Combo Sets.