"A mace is nothing but a weapon, and is nothing but a means to kill. This truth cannot be changed by beautiful words or false pretensions. To slay one to protect the other, to kill one so another can live, this is the reality of weapons"
Primal Pummel (プライマルパンメル, Puraimarupanmeru) is a mace owned by Tsubame.
In its dormant form, the item appears to be a metal club with several spikes sticking out from its head. The mace has a little hoop below that handle which when attached to a rope, may swung by Tsubame for longer distance. Amidst its weight (100 tons), Tsubame is shown carrying the weapon single-handedly without any hassle.
The content of the mace is made out of pure vanadium metal which makes it more devastating when used. The spikes melted to the head of the club is said to kill a person alone. Tsubame can fuse her Protective Umbrella to the weapon to add more durability and damage.