Synapse Springs (Mark II)

Synapse Springs is an Engineer-only permanent "enchant" to gloves. This item may be used alongside a normal enchant on the same pair of gloves.

When used, it increases either Agility, Intellect or Strength for 10 seconds, depending on what stat is highest.

Source
It's taught by engineering trainers for. Learning this will replace the Synapse Springs (Mark I).

Macro
Because it does not trigger the global cooldown, it can be macroed into damage abilities to provide a passive damage boost. For example, a Fire Mage can use the following macro:

/script UIErrorsFrame:Hide /use 10 /script UIErrorsFrame:Clear /script UIErrorsFrame:Show /cast Fireball
 * 1) showtooltip Fireball

This macro will attempt to use synapse springs (the gloves on which they are attached have the item slot number 10) whenever the Mage casts Fireball. A few commands are necessary to hide the error messages that will be displayed when the ability is on cooldown. It is also advised to turn off the error sounds from the sound configuration panel.