This seam repair attachment can be used with the No. 512 Mini-Stretcher or as a replacement part for the No. 514 Mini-Stretcher w/Seam Att. When attached, it allows the tool to be used as a seam repair stretcher by pulling the carpet edges together. In this configuration it can also be used for pattern matching. Uses standard Crain No. 1505-K Gripper Inserts for nap grips. Top knob provides fast adjustment of pin depth.