Yes, it does. The current stock limits are 5 basic killstreak kits per weapon, 7 specialized killstreak kits per weapon (one of each color sheen) and 49 professional killstreak kits per weapon (one for each killstreaker per color)
Trade Offer
Auto-Sell Hats
Automatically sell up to 100 of your eligible hats at once.
Don't worry: we won't take special items, including painted, low craft numbers, special levels, spells, killstreaks, etc.
Autosell Cards
Automatically sell up to 1,000 of your eligible cards at once.