Kiwii,

With regard to reels, some reel companies will label a reel with numbers corresponding to line weights that they feel that particular reel is most suited for or most likely to be used for. But there is no hard and fast rule and no consistancy between brands. On company's 5/6 reel might hold a WF-6-F line and 100 yards of backing and different company's 5/6 reel might hold a WF-6-F line and 150 yards of backing. Such reel model labels are only a guide and there is nothing wrong with using a reel with different rods or lines. For example, I use my Orvis Battenkill 7/8 reel on 6,7,8, and 9 weight rods, my Teton 9-11 on 7 through 10 weight rods, and my Abel Super 11 on 8 through 12 wt rods.