This is Gateron's improved V2 switch puller. It's an updated design to their switch puller with improved internal mechanism and soft plastic bottom end to help resist scratching the PCB & plate.

Gateron V2 Switch Puller

Gateron CAP V2 switches utilize a new mold, and they have significantly less stem wobble compared to V1. Also, Cap V2 switches are slightly factory lubed. These will not come in the small PC cases like the V1s did! 
"Main difference in Milkys' and CAP v2 switches would be the sound. CAP switches tend to give off a more THOCKY sound than the regular switches, which are more CLACKY. Also, since it is factory-lubed, the scratchiness of stock browns are gone."
- Konata
These switches are factory-lubed, and its lube is on the oilier side, so if you are going to lube, please wipe a bit off before lubing. Or else.... that's going to be one wet switch.... 
 CAP V2 Milky Yellow/Golden Yellow Switch Specifications:

4mm Distance Travel
50g Actuation
5-pins
Linear
Factory-lubed

CAP V2 Milky Brown/Golden Brown Switch Specifications:

4mm Distance Travel
55g Actuation
5-pins
Tactile
Factory-lubed

CAP Golden Yellow V2 Switch Specifications: 

4mm Distance Travel
50g Actuation
5-pins
Linear
Light Factory Lube

CAP Golden Brown V2 Switch Specifications: 

4mm Distance Travel
55g Actuation
5-pins
Tactile
Light Factory Lube

Sound Tests by Jaeyou

 
 
Here is a guide on how many switches you'll need for different keyboard sizes (The guide is a reference, but some keyboards market a certain layout even though they require a few more or fewer switches. Always order a few more if you're unsure):

120 - full size
92 - TKL
80 - 75%
70 - 65%
65 - 60%
45 - 40%

 
Selling in quantities of 1 & 10 per pack

- Gateron CAP V2 switches have less stem wobble compared to V1 and are factory-lubed
- CAP V2 switches have a THOCKY sound, while regular switches have a CLACKY sound
- Milky Yellow/Golden Yellow switches are linear, 50g actuation, and factory-lubed
- Milky Brown/Golden Brown switches are tactile, 55g actuation, and factory-lubed
- Golden Yellow switches are linear, 50g actuation, and lightly factory-lubed
- Golden Brown switches are tactile, 55g actuation, and lightly factory-lubed
- Switches are sold in quantities of 1 & 10 per pack
- Guide for number of switches needed for different keyboard sizes is provided

Gateron CAP V2 Switches

Why are the Inks so much more pricier? Inks are the premium line of switches under Gateron. The Ink housing versus milky housing.... everyone's experience is different, but I would say the Inks give off a thockier sound profile than the milky's. 
Main difference would definitely be how smooth it is as STOCK. Gateron does not specify what the housing material is, but I would believe the plastic (housing) has a lower co-efficient of friction because of how smooth the stroke is. 
These switches come lightly pre-lubed. You can lube over.
Red Inks V2

4mm Distance Travel
45g Actuation
5-pins
Lightly Factory-lubed
Linear

Yellow Inks V2

3.5mm Distance Travel
60g Actuation
5-pins
Lightly Factory-Lubed
Linear

Blue Inks V2

4mm Distance Travel
60g Actuation
5-pins
Lightly Factory-lubed
Clicky

Black Inks V2 (Community Favorite)

4mm Distance Travel
60g Actuation
5-pins
Lightly Factory-lubed
Linear

Black SILENT Inks V2

4mm Distance Travel
60g Actuation
5-pins
Stock
Silent Linear

Sound Tests by FilledTypes & Taeha Types

 

Silent Black Inks v2 Sound Test by Jaeyou

Here is a guide on how many switches you'll need for different keyboard sizes (The guide is a reference, but some keyboards market a certain layout even though they require a few more or fewer switches. Always order a few more if you're unsure):

120 - full size
92 - TKL
80 - 75%
70 - 65%
65 - 60%
45 - 40%

 
Selling in quantities of 1 & 10 per pack

- Inks are the premium line of switches under Gateron
- Inks have a thockier sound profile than milky switches
- Inks are smoother than other switches due to their housing material
- Available in Red, Yellow, Blue, Black, and Black Silent
- All switches are 5-pins and lightly factory-lubed
- Red Inks are linear with 4mm distance travel and 45g actuation
- Yellow Inks are linear with 3.5mm distance travel and 60g actuation
- Blue Inks are clicky with 4mm distance travel and 60g actuation
- Black Inks are linear with 4mm distance travel and 60g actuation (community favorite)
- Black Silent Inks are silent linear with 4mm distance travel and 60g actuation
- Sound tests available by FilledTypes, Taeha Types, and Jaeyou
- Available in quantities of 1 and 10 per pack
- Guide for number of switches needed for different keyboard sizes provided

Gateron INK V2 Switches

"An elegant weapon, for a more civilized age."