Wing Defenser
AKA: Wing-D (Stickers)
Weight: 5.4g
Right Spin only
Designed so centripetal motion causes the wings to swing out, with the tips at the trailing edge.
Intended to have the wing tips move back inwards when hit, however this does little to help with the AR's significant recoil issues.
Breakage prone
Defensively it has too much recoil to be useful due to its overall shape and width - which ironically means that Wing Attack Ring is actually an infinitely better defensive choice.
Offensively it lacks any useful contact points for Smash Attack and as such has no use here.
Overall a very poor AR.
Weight: 15.3g
The most compact weight distribution of any weight disk.
It is worth noting that there is quite a broad range of weights for this Weight Disk, which one should be wary of.
The large corners of its shape result in some recoil when hit, though its compact weight distribution provides some protection against this.
Ten Heavy outclasses it slightly in all aspects of performance due to heavier weight, lower recoil, and Eight Heavy is marginally heavier, with a slightly less compact distribution making it a viable alternative.
Fairly competitive in Compacts and Traditional Upper Attack and a backup choice for Weight-Based Defense and Semi Flat Base Stamina Combos.
Weight: 7.2g
4 Layer System Base with built in Right Spin Gear.
Lightweight
Usable Life After Death
A very stable tip with good stability and survival, making it a good Stamina part.
Commonly used in Survival combos with Ten Balance (as Wide Defense and Wide Survivor have issues with rotational recoil and stability on this base), these are best called Semi Flat Base Stamina Combinations, especially as Heavy-Series Weight Disks are also an option, the most famous of which is 10bBistool.
Outclassed by Zombie Base/SG setups, but still a reasonable option in most tournament situations as Semi Flat Base Stamina Combinations are able to beat most Tourney Filler. However, they lose to almost all competitive combinations and as such do not deserve the accolades they have received over the years.
There is an alternative mold used by certain Takara releases (notably Roller Defenser) which has a thinner tip, making it slightly less aggressive and providing slightly more survival. The difference is largely negligible in battle, however.
Overall
The only unique part, Wing Defense Ring, is awful, and while Semi Flat Base and Heavy both have some use, there are other Beyblades with either or even both which have legitimately useful ARs. As such, Wing Defenser should only be bought for collection purposes.