PoE2
Faster Projectiles
Support
Projectile
Cost Multiplier: 120%
Requires: Level 5
Support Reqirements: +5 Dex
Supports projectile skills, making those projectiles travel faster.
Supported Skills have 30% increased Projectile Speed
Place into a Skill's Support Gem socket in the Skills menu to apply its effects to that Skill. You cannot have multiple copies of the same Support Gem socketed at the same time.
PoE1
Faster Projectiles Support
Support
Projectile
Level: (1–20)
Cost & Reservation Multiplier: 120%
Requires: Level (31–70), (52–111) Dex
Supports projectile skills.
Supported Skills have (50–69)% increased Projectile Speed
Supported Skills deal (20–29)% increased Projectile Damage

Additional Effects From Quality:
Supported Skills have (0–10)% increased Projectile Speed
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.