This kind of flanged mace became popular in the middle ages because it could harm the enemy even though he was protected with chainmail or metal armour.
The solid metal flanges would penetrate even the most solid protection.
Although not considered as noble weapon, it was a common weapon as it could be manufactured with low cost, was easy to handle and very effective.
Length: 54 cm / 21.2"
Depth of flanges: 5 cm / 2"
Weight: 1 kg / 2.2 lbs