Wintersteiger binding mount drill bit, 3.5mm x 9.5mm, precision ski drilling with 25 hole plugs

Wintersteiger's 3.5 x 9.5mm Binding Mount Drill Bit is a precision ski-drilling tool that creates accurate, clean holes for mounting bindings and includes 25 plugs to seal unused holes.

Whether you're a shop technician or a hands-on skier, mounting bindings requires consistent hole diameter and depth to protect the ski core and ensure safe, reliable hardware installation. This Wintersteiger drill bit is engineered for that repeatable accuracy: a round shank that fits standard chucks, a controlled cutting profile to reduce splintering of topsheets and cores, and a depth optimized for most Alpine and touring binding screws. The included set of 25 binding hole plugs lets you close out old mounting locations to defend against moisture and preserve the ski’s structural integrity.

How precise is this drill bit for mounting ski bindings?

The Wintersteiger bit is manufactured to tight tolerances so each hole maintains a consistent 3.5 mm diameter and a 9.5 mm depth, minimizing wobble and misalignment during installation. Its cutting geometry and shank finish help produce clean edges around the hole for better screw seating.

• 3.5 mm diameter tailored to industry-standard binding screws
• 9.5 mm depth designed for typical binding thread engagement
• Round shank fits most drill chucks without adapters
• Sharp flute profile reduces chipping of topsheets and core

Can I use this bit with my cordless drill or bench drill?

Yes — the round shank is compatible with standard drill chucks found on both cordless hand drills and shop bench drills. For best results, use a drill with reliable speed control and a stable clamping setup when drilling through ski materials.

• Fits standard chucks — no special adapter needed
• Suitable for portable drills and workshop machines
• Use steady, moderate speed to avoid overheating the bit
• Clamp skis securely and back them with support to prevent blowout

Why include 25 binding hole plugs and how do they help?

The 25 plugs are intended to seal previously drilled or misaligned mounting holes, blocking moisture ingress and preventing core damage. Filling unused holes also restores a neater topsheet appearance and helps maintain structural stiffness around the screw zones.

• Protects ski core from water and debris
• Preserves torsional stiffness by filling voids
• Improves cosmetic finish after remounting or repairs
• Enough plugs for multiple remounts or several pairs of skis

What bindings and ski types is this suited for?

This drill bit works for most Alpine, touring, telemark, and youth bindings that require a 3.5 mm pilot hole depth around 9.5 mm. It’s intended for common screw diameters and mounting practices used by technicians and DIYers, though always verify your binding manufacturer’s recommended bit size before drilling.

• Compatible with standard Alpine and touring bindings
• Appropriate for adult and kids’ skis across many brands
• Not a substitute for manufacturer-specific pilot recommendations
• Great for re-drilling, remounting, and prep work

Who is this for: This Wintersteiger drill bit and plug set is aimed at ski technicians, pro tuners, and experienced DIY skiers who need reliable, repeatable hole quality for binding mounts. It’s also useful for shops that perform frequent remounts and for home tuners who want professional-grade tools and enough plugs to complete multiple jobs without running out.