DMM Apex Ice Axe - Rock+Run
Tether Up! — Furnace Industries
A guide to ice tools for walkers and climbers
Ice tool - Wikipedia
American Alpine Institute - Climbing Blog: DIY Leashless Ice Tool Tether/Umbilical
Leash or Leashless? | ISM
Petzl Nomic Ice Tools - Hiking in Finland
American Alpine Institute - Climbing Blog: DIY Leashless Ice Tool Tether/Umbilical
American Alpine Institute - Climbing Blog: DIY Leashless Ice Tool Tether/Umbilical
Petzl Nomic Ice Axe - Pair Deal
Black Diamond Viper - Needle Sports Ltd
Petzl Nomic Ice Tools - Hiking in Finland
TECH MACHINE – Grivel
Leash or Leashless? | ISM
Will Gadd – Athlete, Speaker, Guide
UKC Gear - GROUP TEST: Technical Ice Axes
NORTH COULOIR - Ice axes | Climbing Technology
Switch – DMM
American Alpine Institute - Climbing Blog: DIY Leashless Ice Tool Tether/Umbilical
Grivel Tech Machine - Rock+Run
UKC Gear - Black Diamond Cobra Ice Axe
AlpineDave - Make your own Leashless umbilicals (aka Double Spring)
Trango Mantis - Leashless Tool Review - Climbing
