Titan's GraspEquipment 18
Source Pathfinder Secrets of Magic
Price 24,000 gp
Weight light
These bronze gauntlets each have a small red gem embedded in the wrist. You gain a +3 item bonus to Athletics checks and a +1 circumstance bonus to Athletics checks to Grapple. If you successfully Grapple an enemy that's at least one size category larger than you, the gauntlets dig into it, dealing bludgeoning damage equal to your Strength modifier, plus an additional 2d6 bludgeoning damage on a critical success.
When you invest the gloves, you either increase your Strength score by 2 or increase it to 18, whichever would give you a higher score.
Activate 
Interact (sonic)
Frequency once per day
Requirements You have two hands free
Effect You clap the gauntlets together with a thunderous crack that deals 6d10 sonic damage in a 30-foot emanation. Each creature in the area must attempt a DC 35 fortitude save.
Critical Success The creature is unaffected.
Success The creature takes half damage.
Failure The creature takes full damage and is Deafened for 1 round.
Critical Failure The creature takes double damage, is deafened for 1 minute, and is Stunned 1.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ApexWhen you Invest an Item that has the apex trait, it improves one of your ability scores, either increasing it by 2 or to a total of 18, whichever grants the higher score. This gives you all the benefits of the new ability score until the investiture ends. An apex item grants this benefit only the first time it's invested within a 24-hour period, and you can benefit from only one apex item at a time. If you attempt to invest an apex item when you already have one invested, you don't gain the ability score increase, though you do gain any other effects of Investing the Item.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
InvestedA character can wear only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn't invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.