They are made by using a needle and thread on four batwing, requiring 59 Crafting and giving 200 Crafting experience. Unlike the batwing shield, it does not provide defence bonus; however with the book and a wand equipped, a player is able to cast spells twice as fast with auto-attacks and in legacy combat mode. The choice between a bat book and bat shield depends on the target, and is the general choice between dual-wielding or using a shield. This article incorporates text from the RuneScape Wiki which is also licensed under CC-BY-SA.