OTC Tools OTC 1158 Basic 5 Lb Slide Hammer Unit with OTC1152 Internal Pulling Attachment. This puller combine a basic slide hammer unit with a No. 1152 internal pulling attachment. Ideal for removing bearing cups, outer races, and oil seals from blind holes. Upon removal of the internal pulling attachment, the basic slide hammer unit, which has a 5/8"18 threaded end, may be used with various adapters for a multitude of pulling jobs. Max Spread: 6"; Min Spread: 1-5/8"; Reach: 4"; Overall Lenght: 28".