The Pear-Shape Bur #330 is useful for sectioning teeth, removing buccal bone, creating moats around root fragments and smoothing alveolar bone. Both the tip and the side of the head on these burs can be used. The smaller the number, the smaller the cutting gap size. The #330 is ideal for felines. FG stands for friction grip which is used for push button handpieces and 19 mm is the length of the bur which is the most common length.