Thanks to Outemu, we are proud to offer another fantastic switch to the GAZZEW product line - The Boba U4T thocky tactile switch. The Boba U4T switch is was not manufactured with the intention of being silent, and it's not. The "T" in U4T stands for "extra Thocccc". "D" shaped tactile bump profile, no pretravel, all bump, no post bump travel. All GAZZEW switches use the same housing mould, superior plastic, tight tolerances, and Korean springs - all of which the community has come to expect. Leaf is factory lubed, but slide rails/rail-slots are dry. Lubing not suggested; if builder chooses to, you can use both thin/thick lube (personal preference).