Toolbelt

The Toolbelt is an accessory item sold by the Goblin Tinkerer that increases the range of block placement by one (from 5 to 6 sideways and from 3 to 4 upwards and downwards). It does not increase block mining range. It is near useless in combat or exploration situations (in which it may contribute through a modifier and possibly the making of structures to hinder enemies), but may be very neat when building houses and similar. As such, it is recommended to - if you decide it's worth the money - normally leave the Toolbelt in a storage item and instead use the vacant accessory slot for a more useful accessory.