With Flame Libra T125ES being the first to use the T125ES combo, The Eternal Sharp bottom is surprisingly heavy, clocking in a whole Gram, but still lacks use. Eternal Sharp features a free-spinning Tip attached to a metal shaft which is held by the Performance Tip. The part was one of the most heavily anticipated parts in the Metal Fusion lineup, when first announced, but ES is actually a hugely disappointing part in terms of performance.
Firstly, ES lacks a metal bearing, which would significantly reduce the friction between the free-spinning Tip and the rest of the Bottom. All of the best free-spinning Tips, notably Bearing Core, had NSK Shield bearings which allowed unhindered spin. Secondly, the Tip shape of ES is not conducive to optimum Balance; the Sharp nature of the Bottom means it is easily destabilized.
As all Sharp Tips do (Excluding AS), Eternal Sharp also has trouble regaining Balance, hence making this a poor choice for Stamina. That said, ES still remains superior to BS/MS/S/DS/EDS/D/SD/HF\S/PD as Stamina Bottoms. This bottom allows the user to tilt at extremely low angles without floor scrapes, however, it cannot regain its balance in this state unless it hits its opponent and having the impact bounce itself back up. If it is hit from behind when tilting like this, it has a 95% chance of being outspun unless used with ED145. For unknown reason(s), some users experience lots of movements from this tip, giving the Bey both Attack and Stamina. By using that movement/speed, it can weaken the impact if its is attacked by an Attack type. Its Stamina levels reign superior even to SD . As a Stamina bottom, It is outclassed by B:D, EWD, and AS due to more Stamina (B:D can spin over 7 mins if undisturbed, EWD combines the amazing Defense of WD while retaining ES's superior Stamina, AS is regains balance quickly and has equal Defense to EWD but with more height but not as much as ES). However, these bottoms do not provide the speed/movement/height ES provides. The height of ES can turn a 125 height-user to a 155 height. It is the opposite of the AS bottom. This is a good Performance Tip/bottom for Starters who would like to focus on Stamina.