JWK Ultimate Blacks feature new molds and some special additives to the top and bottom housing materials that are designed to optimize the bottoming out and topping out sounds. Top Housing: PC - Smokey Black Bottom Housing: Nylon - Opaque Black Stem: POM - Opaque Black Bottom Out Force: 58.5g Switch Type: Linear Mount Type: 5-Pin (PCB Mount) Pre-Lubed:
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Featured Product: Milky Yellow PRO
Super smooth out of the box. Highly recommended.