Drop Rates
Drop rates are confirmed by Valve. Individual item probabilities are calculated by dividing the tier chance equally among items in that tier. Learn more
Items
AWP
Oni Taiji
Five-SeveN
Hyper Beast
M4A4
Hellfire
Galil AR
Sugar Rush
Dual Berettas
Cobra Strike
AK-47
Orbit Mk01
SSG 08
Death's Head
P90
Death Grip
P2000
Woodsman
P250
Red Rock
USP-S
Blueprint
M4A1-S
Briefing
Tec-9
Cut Out
MAC-10
Aloha
FAMAS
Macabre
UMP-45
Metal Flowers
MAG-7
Hard Water
Special Items
★ Sport Gloves
Pandora's Box
★ Sport Gloves
Hedge Maze
★ Specialist Gloves
Crimson Kimono
★ Sport Gloves
Superconductor
★ Moto Gloves
Spearmint
★ Sport Gloves
Arid
★ Specialist Gloves
Emerald Web
★ Moto Gloves
Cool Mint
★ Driver Gloves
Crimson Weave
★ Specialist Gloves
Foundation
★ Hand Wraps
Spruce DDPAT
★ Driver Gloves
Diamondback
★ Hand Wraps
Leather
★ Hand Wraps
Slaughter
★ Driver Gloves
Lunar Weave
★ Moto Gloves
Eclipse
★ Moto Gloves
Boom!
★ Bloodhound Gloves
Charred
★ Driver Gloves
Convoy
★ Specialist Gloves
Forest DDPAT
★ Hand Wraps
Badlands
★ Bloodhound Gloves
Bronzed
★ Bloodhound Gloves
Snakebite
★ Bloodhound Gloves
Guerrilla
About the Operation Hydra Case
The Operation Hydra Case is a CS2 weapon case released in Apr 2017. It contains 41 weapon skins across 5 rarity tiers, plus a rare special pool of knives and gloves. Each opening costs the case price plus a $2.49 key.
Mil-Spec Grade items drop 79.9% of the time. Special items are the rarest at 0.26% — roughly 1 in 385. StatTrak versions have a 10% chance on each drop.
Notable drops include ★ Sport Gloves | Pandora's Box ($30,924), ★ Sport Gloves | Hedge Maze ($27,999), and ★ Specialist Gloves | Crimson Kimono ($10,500).
Drop Rates
5 rarity tiers, ranging from Mil-Spec Grade (79.9%) down to Special (0.26%).
- Mil-Spec Grade79.9%
- Restricted16.0%
- Classified3.20%
- Covert0.64%
- Special0.26%
Each item within a rarity tier has an equal chance of dropping.
Simulate This Weapon Case
Unbox the Operation Hydra Case for free in our CS2 case simulator. No Steam account or real money needed.
Classic mode plays the reel animation with an optional auto-open toggle for continuous openings. Bulk mode can simulate up to millions of openings at once with a results heatmap.
Calculate Your Unboxing Cost
Each Operation Hydra Case needs a $2.49 key on top of the case price. Use the case calculator to set a quantity, see the total in 160+ currencies, and send your plan to the simulator.


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