Fencer's ring

Jewelry Ring

Item Details

Utility 25.75
Bonus Level 17
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required Any
Usable By
All Classes

Magical Bonuses

Basic
Hit Points 23
Blades 4

Raw Item JSON

{
  "sell_value" : 13827,
  "bonus_level" : 17,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "fomorian bruid" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 103,
  "utility" : 25.75,
  "delve_text" : "Realm: Hibernia\n \nMagical Bonuses:\n- Blades: 4 pts\n- Hits: 23 pts\n \n \n \nBonus Level: 17\n",
  "slot" : 15,
  "artifact" : false,
  "material" : 0,
  "name" : "Fencer's ring",
  "usable_by" : [ 0 ],
  "realm" : 3,
  "id" : 21227,
  "category" : 5,
  "bonuses" : [ {
    "id" : 101,
    "type" : 2,
    "value" : 4
  }, {
    "type" : 4,
    "value" : 23
  } ],
  "ability_tags" : [ ]
}
How is utility calculated?