D&D4 Wiki
Attack bonus if proficient +2
Weapon die ([W]) 1d8
Type melee
Handedness one-handed
Proficiency category simple
Weapon group
Weapon property versatile
Price 5 gp
Weight 6 lb.

A mace is a simple one-handed melee weapon in the mace weapon group.[PH:218]

A mace is a versatile weapon, so medium characters may wield it two-handed to deal 1 extra damage. Small characters must wield it two-handed, and they deal no extra damage for doing so.

Ardents, artificers, avengers, barbarians, bards, battleminds, clerics, druids, fighters, invokers, paladins, psions, rangers, runepriests, seekers, shamans, sorcerers, swordmages, vampires, wardens, warlocks, and warlords are proficient with all simple melee weapons, including the mace. Assassins are proficient with one-handed simple melee weapons, including the mace. Rogues who select the Ruthless Ruffian option of the Rogue Tactics class feature gain proficiency with the mace.

Other classes do not have proficiency with the mace as a class trait, but any character can become proficient by taking a Weapon Proficiency feat.