Equipment drops as a base item plus random affixes. The base fixes the slot, the art and (for legendaries) a power; the affixes come from the slot's pool below. Ranges for any item level are in the item roll calculator.
Weapon 33
Primary stat pool: Strength, Dexterity, Intelligence, Damage, Critical Hit Damage, Attack Speed, Basic Attack Damage, Strong Attack Damage, Special Ability Bonus Damage, Physical Damage, Fire Damage, Cold Damage, Lightning Damage, Poison Damage, Arcane Damage, Damage vs Healthy, Damage vs Injured, Damage vs Slowed, Damage vs Immobilized, Damage vs Elite, Damage vs Bleeding, Damage vs Distant, Damage vs Poisoned, Damage Over Time, Damage vs Burned, and Damage vs Vulnerable. Secondary stat pool: Life on Hit, Life on Kill, and Mana on Kill. Can roll up to 3 gem sockets.
Helm 24
Primary Affixes: Strength, Dexterity, Intelligence, Max Health, Max Mana, Cooldown Reduction, Magic Resist, Dodge Chance, Bonus Armor, Lightning Damage Reduction, and Arcane Damage Reduction. Secondary Affixes: Life Regeneration, Item Find, Gold Find, Health Potion Find, and XP Gained. Can roll up to 1 gem socket.
Shoulder 21
Primary stat pool: Strength, Dexterity, Intelligence, Max Health, Magic Resist, Dodge Chance, Cooldown Reduction, Poison Damage Reduction, Fire Damage Reduction, Critical Damage Reduction, and Thorns. Secondary stat pool: Life Regeneration and Bonus Move Speed.
Chest Armor 22
Primary Affixes: Strength, Dexterity, Intelligence, Max Health, Magic Resist, Dodge Chance, Thorns, Bonus Armor, Bonus Health, Special Ability Bonus Damage, Damage vs Healthy, Damage vs Injured, Physical Damage Reduction, and Cold Damage Reduction. Secondary Affixes: Life Regeneration, Life on Hit, Gold Find, Item Find, and XP Gained. Can roll up to 2 gem sockets.
Gloves 20
Primary stat pool: Strength, Dexterity, Intelligence, Cooldown Reduction, Mana Cost Reduction, Max Mana, Critical Hit Chance, Damage, Critical Hit Damage, Attack Speed, Critical Damage Reduction, and Magic Resist. Secondary stat pool: Gold Find, Item Find, Health Potion Find, Mana on Kill, and XP Gained.
Belt 16
Primary stat pool: Strength, Dexterity, Intelligence, Max Health, Dodge Chance, Magic Resist, Mana Cost Reduction, Bonus Potion Charges, Cooldown Reduction, Attack Speed, and Thorns. Secondary stat pool: Health Potion Find, Life Regeneration, Mana on Kill, and XP Gained.
Pants 20
Primary stat pool: Strength, Dexterity, Intelligence, Max Health, Magic Resist, Dodge Chance, Thorns, Bonus Armor, Bonus Health, Poison Damage Reduction, and Physical Damage Reduction. Secondary stat pool: Life Regeneration, Life on Hit, Gold Find, Item Find, and XP Gained. Can roll up to 2 gem sockets.
Boots 17
Primary stat pool: Strength, Dexterity, Intelligence, Max Health, Magic Resist, Dodge Chance, Mana Cost Reduction, Cold Damage Reduction, Fire Damage Reduction, and Critical Damage Reduction. Secondary stat pool: Health Potion Find, Bonus Move Speed, Life on Hit, Item Find, and Gold Find.
Necklace 19
Primary stat pool: Strength, Dexterity, Intelligence, Critical Hit Chance, Critical Hit Damage, Attack Speed, Cooldown Reduction, Magic Resist, Basic Attack Damage, Strong Attack Damage, Physical Damage, Fire Damage, Cold Damage, Lightning Damage, Poison Damage, Arcane Damage, Damage vs Healthy, Damage vs Injured, Damage vs Slowed, Damage vs Elite, Damage vs Vulnerable, Bonus Armor, and Bonus All Damage. Secondary stat pool: Bonus Move Speed, Life on Hit, Item Find, and XP Gained. Can roll up to 1 gem socket.
Ring 22
Primary stat pool: Strength, Dexterity, Intelligence, Critical Hit Chance, Critical Hit Damage, Attack Speed, Max Mana, Magic Resist, Damage vs Vulnerable, Physical Damage, Fire Damage, Cold Damage, Lightning Damage, Poison Damage, Arcane Damage, and Bonus All Damage. Secondary stat pool: Life on Hit, Life on Kill, XP Gained, Item Find, and Gold Find. Can roll up to 1 gem socket.