From Guild Wars 2 Wiki
“Equip a kit that replaces your weapon with healing skills.
— In-game description [?]
 Description and Skills
|Drop Bandages (x3)||12||Drop a pack of bandages that provides a little healing.|
|Drop Antidote||15||Drop a vial of antidote that cures one condition.|
|Drop Stimulant||20||Drop a stimulant that grants fury and swiftness.|
- Packaged Stimulants - Med Kit skills can be thrown.
- Activating or stowing the kit triggers on-heal effects; using the kit's five skills (or its tool belt skill) does not.
- Each skill stays activate on the ground for a fairly long time. Bunker engineers can repeatedly place them at PvP capture points before any enemies arrive so there is a 9,000-12,000 heal, 1-3 condition removals, fury and swiftness ready.