Summary

3-way screwdriver (or driver/wrench) for 1/4" hex bits

Based on BSC Tools' 3-Way Donut Screwdriver (https://www.bicycleservicecentre.co.uk/product/bsctools-3-way-donut-screwdriver/201), and inspired by bee_kay77 on Instagram (https://www.instagram.com/p/DR4PiRPkWL4/).

Useful combinations for bikes are 2.0, 2.5, and 3.0mm hex; 4.0, 5.0 and 6.0mm hex; T10, T25 etc. torx. The photos show Wera 89mm bits from Bicycle Set 2.

Hardware:

• 3 x M3x5x4mm threaded inserts (as used by Voron) e.g. https://www.aliexpress.com/item/4000232858343.html
• 3 x M3x10mm socket cap screws
• 1/4" hex bits

Designed as test of this style of tool, rather than something to overtighten stem bolts with.