With this device, you get an extra pair of blades and also 2 support wings. You can attach these wings either to the front or the rear portion to add some extra support to it.
Honestly, these two sets of accessories are great to add on. Moreover, if you feel like adding some more support accessories to your planing kit, even that can be done. Their mobile thickness planer stand is also a great addition that you can purchase.
The quality of this stand is better than the others that are available on the market.