Full Specifications

Switch TypeLinear
Stem MaterialBlack POM
Housing MaterialMilky + Black CJ blend
Spring TypeSingle-stage
Factory LubedLight factory lube
PCB Compatibility5-pin (PCB Mount)
Actuation Force50g
Bottom-Out Force65g
Pre-Travel2mm
Total Travel4mm
Sound ProfileSmooth Medium Thock
Price$3.00 per 10 switches

Editorial Review

Gateron's CJ Jelly series takes an interesting approach to the housing question. Rather than choosing between Milky Nylon (warm, muted sound) or standard Nylon (brighter), the CJ housing uses a proprietary blend that falls between the two. The result is a switch with a smooth, medium-pitched thock that is accessible for beginners while offering genuine quality that experienced builders appreciate.

The Jelly Black specifically uses a black POM stem for 50g actuation — positioned above the ultra-light Yellow family but below heavier switches like Creams or Hyperglide Blacks. This weight hits a practical sweet spot for users who find 35g too light and 62g+ too heavy. The POM stem travels smoothly through the CJ housing, and the light factory lube application helps the stock experience without making additional lubing unnecessary.

Sound profile is a smooth medium thock that leans toward the Milky Nylon character without fully committing to the deep, muted sound of a true Milky switch. There is enough brightness to feel responsive and enough body to feel substantial. In most boards, Jelly Blacks produce a sound that is pleasant without being remarkable — which is exactly appropriate for a versatile daily driver switch.

The CJ housing also exhibits less stem wobble than standard Gateron switches, contributing to a tighter, more consistent sound. This improved tolerance is part of what separates the Jelly series from Gateron's more basic offerings. The switch feels more premium than its $3.00 per ten price suggests.

For builders on a strict budget who want a complete package — factory lubed, decent tolerances, medium weight, and pleasant sound — Jelly Blacks are a strong candidate. They compete directly with the Gateron Melodic and beat the standard Yellow in terms of out-of-box experience for most users. Additional lubing transforms them into competitive switches that embarrass many more expensive alternatives.

Best Keyboards For These Switches

Keychron Q1

Gasket aluminum board where Jelly Black medium thock sounds well-tuned.

GMMK Pro

Popular gasket board where Jelly Blacks perform above their price point.

KBD67 Lite

Budget polycarbonate board where the CJ housing blend adds warmth to the sound.

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Where to Buy

NovelKeys
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KBDFans
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Keychron
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Amazon
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Frequently Asked Questions

What makes Gateron Jelly Black different from regular Gateron Black?
Standard Gateron Black uses a Nylon housing while the Jelly Black uses the CJ proprietary housing blend that falls between Milky Nylon and standard Nylon. The CJ housing also has tighter tolerances, reducing stem wobble compared to standard Gaterons. Additionally, Jelly Blacks ship with light factory lubing. The result is a more refined switch with a warmer, more consistent sound character.
Are Gateron CJ Jelly Blacks smooth stock?
Better than most budget Gaterons, yes. The CJ housing tolerances are tighter than standard Gateron Nylon, and the light factory lube provides a smooth baseline. They are not as smooth as a hand-lubed premium switch, but they are genuinely pleasant stock — a notch above most budget linears in terms of out-of-box experience.
What is the CJ housing in Gateron switches?
The CJ designation refers to Gateron's proprietary housing material blend used in the Jelly series. It is not publicly documented by Gateron, but community testing suggests it is a blend of Milky and standard Nylon formulations. The CJ material produces a sound between the two — warmer than standard Nylon but not as muted as Milky Nylon — and appears to have tighter dimensional tolerances than either base material.