Its viscosity of 100 cSt makes it great for all moving rubber parts. While it keeps the rubber smooth, it doesn't slow down fast-moving parts like the piston.

The viscosity of 1000 cSt is excellent to maintain the air seal of your gun and magazines. It's especially great for static parts that are not moving in the gun like cylinder head, hop-up, GBB magazine lips, o-rings, etc.

The mechanics oil's purpose is to keep the friction of metal or polymer parts small. It's also great to protect steel parts such as the SSG cylinders from oxidation.

Screw glue is the #1 most underrated substance in airsoft gun maintenance. Most airsoft guns create a lot of vibrations during the shot which can make the screws come loose and eventually fall out. With the medium-strength thread lock, you can avoid that from happening. Once you start using screw glue while assembling certain parts of your airsoft gun, it will become much more reliable in the long run. You can still loosen up the screws by hand once you've glued them.

The included wipes are great to clean your inner barrel. Due to the strong material, you can use it for cleaning as well as for applying silicone or mechanic oil to your gun parts. Unlike standard tissues, these won't rip and will not leave any residues or fibers inside of your gun and barrel. 

Great for Pistons and O-rings. Silicone Grease is used for parts with a lot of friction between them. Grease is more likely to stay in place due to its consistency. Ideal for gears and piston racks in an AEG. Can be also useful for SSG cylinders.

The collapsible rod can be built from 6 pieces. You can build a cleaning rod with a length of 10/20/30/40/50/60 cm, so it can be universal for pistols and rifles. The rods are also engraved with the ruler scale, that you can control the depth of your cleaning.

Slotted tips are used in combination with the Cellulose Wipes to clean the barrel. Also this slotted tip has a special design, therefore it can be used as an Unjamming tool if the BB get stuck inside the barrel

Very handy tool for polishing the barrel.

The Bag of the Gen2 maintenance kit has a zipped pocket now where you can store your own tools or accessories.