The ★ Karambit | Doppler Phase 4 in Factory New (FN) has a blue and white marbled blade and a float of 0.00 to 0.07. This is a Covert rank knife, with the ★ mark. In CS2 this karambit drops from the Chroma cases, and the skin exists in just two wears, Factory New and Minimal Wear (MW).
What the ★ Karambit | Doppler Phase 4 looks like in Factory New
The blade is curved and marbled: dark blue clouds on a light, almost white base. The blue runs onto the finger ring and the notch at the base of the blade. The handle is dark gray and ribbed, with deep grooves. Valve describes the base of Doppler as black and silver metallic paint over a marble base.
In Factory New wear is practically invisible: the float is within 0.00 to 0.07, and the artwork reads cleanly.
Where the ★ Karambit | Doppler Phase 4 came from
The ★ Karambit | Doppler Phase 4 has no Workshop submission: the finish was drawn inside Valve. It came out on January 8, 2015, with the Full Spectrum update that opened the first Chroma case. In Valve's finish catalog it is number 421.
Phase and pattern
The phase is named in the listing title, so you choose it outright. Within one phase, copies differ by pattern index, which changes the ratio of colors and where they sit on the blade. Phase 4 has copies dominated by blue, and a fully blue blade resembles Doppler Sapphire.
What to check before buying
The differences between copies of the ★ Karambit | Doppler Phase 4 come down to this:
- float: a band of 0.00 to 0.07;
- share of blue on the blade: the closer to solid blue, the more the copy resembles Doppler Sapphire;
- name tag: a name on the karambit stays after purchase.
The band of 0.00 to 0.07 is tight, and listings at the extremes differ only by the number.
What the ★ Karambit | Doppler Phase 4 costs in Factory New
Minimal Wear costs about nine percent more.
Of thirty-three Covert karambit finishes with a price in this wear, fifteen are cheaper and seventeen are dearer. Closest above are Gamma Doppler Phase 4 and Scorched, and below come Blue Steel, Doppler Phase 1 and Doppler Phase 3. At the bottom stand Bright Water, Freehand and Damascus Steel. The highest are Gamma Doppler Emerald, Doppler Ruby and Doppler Black Pearl.
Getting the ★ Karambit | Doppler Phase 4
Three Chroma cases contain the finish: Chroma Case, Chroma 2 Case and Chroma 3 Case. The second route is a trade-up from five Covert skins of one type, all normal or all StatTrak. It returns a special rare item from the collections of the inputs, and the phase cannot be chosen.
Is there a StatTrak version
StatTrak copies of the ★ Karambit | Doppler Phase 4 exist in the game.
Who this wear suits
The ★ Karambit | Doppler Phase 4 in Factory New is worth buying when:
- you want a karambit with a blue and white marbled blade and no scuffs;
- the phase is chosen in advance and you need Phase 4 specifically, not a gem;
- you want minimal wear without searching by float.









































































