A 9.5mm long double step drill bit with 3.5mm diameter tip for the ski core that steps to a 4.1mm diameter at the top sheet, then steps to the standard 5/16"/8mm shoulder and shank to fit in jigs & guides.

Alpine Binding Screw threads have a 12AB pitch and measure 5.5mm. The Snoli Threadcutter (aka 12 AB tap) with integrated handle is a must have tool for hard ski surfaces (metal and carbon topsheets) and is also recommended for cleaner holes after drilling or screw replacements.

Don't be caught out with your screws loose. Vibra-Tite VC-3 is excellent for stainless steel threaded inserts and screws, alpine screws and brass tap-ins & snowboard inserts. Won't harm plastic binding parts and is capable of multiple uses without reapplication. This 5ml tube with long shelf life will last for a long time.