PoE2
Volley
Support
Projectile
Tier: 1
Requires: Level 1
Support Reqirements: +5 Dex
Supports skills that fire projectiles from the user. Does not affect projectiles fired from other locations as secondary effects.
Supported Skills fire 2 additional Projectiles
Supported Skills also fire Projectiles from up to 4 points on each side of you
Supported Skills deal 20% less Projectile Damage
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
Volley Support
Support
Projectile
Level: (1–20)
Cost & Reservation Multiplier: 130%
Requires: Level (4–70), (12–111) Dex
Supports skills that fire projectiles from the user. Does not affect projectiles fired from other locations as secondary effects. Does not support skills that fire projectiles in a spiral.
Supported Skills fire 2 additional Projectiles
Supported Skills also fire Projectiles from up to 2 points on each side of you
Supported Skills deal (3–12)% less Projectile Damage

Additional Effects From Quality:
Supported Skills deal (0–10)% increased Projectile Damage
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.