The Tapered Fissure Bur #701L (699, 700, 701, 701L, 702) is an all-purpose bur that can be used to section teeth, gain endodontic access and is also useful as a general purpose bur. Tapered means the cutting diameter tapers towards the end of the bur and fissure means the bur can cut at its tip, as well as section teeth along its side. The smaller the number, the smaller the diameter of the bur. In this case, #701 will leave a medium-sized cutting gap. The letter L denotes a longer cutting surface, making it ideal for feline and canine. 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.