Latest in the Gazzew switch line are the highly-coveted U4T Boba switches! Available in two spring weights, built with high quality materials and tuned to near-perfection from constant feedback, these thocky tactiles shine in any board!

Gazzew U4T Boba Switches

Similar to the Boba U4T switches, a thin PTFE-based grease is recommended, if you feel lubing is necessary. These are factory assemble and have a light lube on the leaf and the springs have been "donut-dipped."

Gazzew's "LT" Linear Thock switches

Gazzew U4Tx tactile switches (10pcs)

Note: switch testers are not automatically bundled with books. They must be added to your cart separately.
Sometimes the mechanical keyboard world can seem overwhelming. It can also grow into a relaxing hobby that you want to share. Romly, a Japanese keyboard enthusiast, has a coffee table guide to help out.
detailed images and infographics
Beautiful photos and detailed research cover every page. Each element of the book is stylish, informative, and (oftentimes) cute. Learning and sharing will be easy, especially with the optional tester as a reference.
commentary and data for 12 switches
Romly breaks down different keyswitches based on raw data (like force curves), offering a lighthearted take on their performance and press-feel. Pop-culture references abound. Even the glossary of terms is accessible.
community spirit
Nods to community members, helpful organizations, and individuals show great respect for the keyboard hobby. Our team admires this — we hope to see more contributors like Romly creating content in the future.
switch tester bundle Gateron: Red, Black, Blue, Brown, Clear, Green, Yellow
Kailh: Pro Burgundy, Pro Purple, Pro Light Green
NovelKeys x Kailh: Box Thick Click Jade, Box Thick Click Navy measurements Book Dimensions: 18.2 cm x 18.2 cm x 0.4 cm
Book Weight: 138 g
Tester Dimensions: 9.1 cm x 9.1 cm x 2.5 cm (base to keycap)
Tester Weight: 82 g

- Romly, a Japanese keyboard enthusiast, has created a coffee table guide for mechanical keyboard enthusiasts.
- The book includes detailed images, infographics, and beautiful photos covering every page.
- The book provides commentary and data for 12 different switches, including force curves and press-feel.
- The glossary of terms is accessible and pop-culture references abound.
- The book nods to community members, helpful organizations, and individuals, showing great respect for the keyboard hobby.
- A switch tester bundle is available, including Gateron, Kailh, and NovelKeys x Kailh switches.
- The book dimensions are 18.2 cm x 18.2 cm x 0.4 cm and the weight is 138 g.
- The switch tester dimensions are 9.1 cm x 9.1 cm x 2.5 cm (base to keycap) and the weight is 82 g.
- Note: switch testers are not automatically bundled with books. They must be added to your cart separately.

Romly Mechanical Switch Data Book & 12-Switch Tester

Type Linear Travel Distance 2mm Actuation 4mm Bottom Force 35g Operating 40g Bottom Mount PCB Spec SheetType Linear Travel Distance 2mm Actuation 4mm Bottom Force 45g Operating 55g Bottom Mount PCB Spec SheetType Linear Travel Distance 2mm Actuation 4mm Bottom Force 50g Operating 60g Bottom Mount PCB Spec SheetType Linear Travel Distance 2mm Actuation 4mm Bottom Force 60g Operating 75g Bottom Mount PCB Spec SheetType Tactile Travel Distance 2mm Actuation 4mm Bottom Force 55g Peak 55g Operating 65g Bottom Mount PCB Spec SheetType Clicky Travel Distance 2.3mm Actuation 4mm Bottom Force 60g Peak 60g Operating 60g Bottom Mount PCB Spec SheetType Clicky Travel Distance 2mm Actuation 4mm Bottom Force g Peak 65g Operating 75g Bottom Mount PCB