Logan Internal Cutters are used to cut tubing, casing, and drill pipe and may also be run on sucker rods and macaroni strings. These mechanically operated cutters permit alternate sizes of pipe to be cut when redressing an assembly. All Internal Cutters feature a device that allows the operator to set the cutter to any depth, release the tool, and reset it to another depth without coming out of the hole. Each cutter is designed to cut a given range of tubing when dressed with correctly sized components. Collar finders are also available for each size.