02
Differences between generations
Choose the feedback mechanism first, then compare diameter, thickness, weight and surface. Gen 3 does not replace every magnetic Milk Cap.
The 2020 OG / PPB is 40 x 8 mm. Standard Mini is 36.5 x 10 mm, with listed weights of 64.9 g for steel, 39.6 g for titanium and 55.4 g for zirconium. Dark Matter Mini is 38 x 10 mm and 2021 Glow Mini is 38.5 x 10 mm; standard Mini dimensions do not cover these variants.
Nano is 31.8 mm across. The steel standard and 2022 versions are each listed at 43 g, and the zirconium versions at 36 g. Mechanical Gen 1 is approximately 35 x 10 mm: steel 53 g, zirconium 46 g and superconductor 49 g. Similar size does not imply shared internals.
Noise Gen 2 uses a PTFE bearing and a side-oriented layout. Gen 3 returns to a large bearing like Gen 1, moves to a vertical layout and locks with a small bearing. Placement changes dense or discrete feedback. The maker names Ruida 0.25/0.3 springs and 3 mm balls for the ringing setup without defining the spring-number units.
The maker links the Gen 3 changes to reports of PTFE debris and tightening in winter. This explains the design revision without claiming every Gen 2 fails or that Gen 3 needs no maintenance.
04
Included parts and separate options
Check the generation and release when reading contents. Pictured accessories, launch gifts and separate kits are not a universal standard package.
The 2022 Nano poster lists a box, the body with magnets and bearing fitted, and a sticker. That list is not extended to every OG, Mini, Noise or Devil batch.
Mechanical Gen 1 has one tungsten-carbide ball and one long spring installed. Included spares are one ball, two long springs and three shims. The rotor-simulation kit with three balls and three short springs is a separate option.
The six-cap PC Mini case is sold separately; the 2020 launch offered one with six Minis. Devil had a time-limited leather-case gift through midnight on August 30, 2021, followed by separate purchase. Later inclusion is not assumed.
The Minerva Box vegetable-tanned top-grain leather keychain is a separate Noise accessory. Remove the middle cover and press bead to attach the cord; compatibility is not extended to other Milk Caps.
The two collaborators document a Fire Peng box, body, spare springs and balls, collaboration card, YOLO 2026 collectible card and ACEdc sticker. Any added shell in the front logo needs a separate arrangement.