This spool is to be used both to cast long, and pitch well. This is a little shallower than Mag-Z Boost 1000 spool. It extends casting distance by reducing brake force at the later half in casting. Fits to Daiwa TW 1000, 1012, 1025 and 1016 reels, T3(all models) and etc. Flat bottom, light-weight 14g spool to improve casting performance especially for relatively heavy rigs of 10g-28g 3/8-1oz, and for pitching in short distance. Made of G1 grade duralumin. In MAGFORCE-Z Boost brake, rotor will pop out far only at the beginning of casting to prevent backlash, and then it retracts to the middle to reduce brake to add casting distance. The second half spring is 4 times stronger than the first half to do the trick. Compared to SV Boost spools, this Magforce-Z Boost spools have more weight, and it is more suitable for heavier rigs. Casts great for heavier than 7g 1/4oz. 0.310mm(US12lb)-100m(110yds)