Abstract: A tool for installing a saddle tee with a piercing cap on a poly pipe includes a housing having a top, a bottom and side portions. The top portion is adapted for receiving a drive device. The bottom portion is adapted with at least one pair of fins shaped to couple to wings on the piercing cap to apply a rotational force to the piercing cap. The side portion of the housing has a slot to accommodate an angular fitting that may be installed in the piercing cap. Such a tool may be a drive socket. The drive device attached to the top may be permanently attached or may be a quick release fitting. The drive device may include an extension bar, a T-handle, a speed handle, or a ratchet. The drive device may connect to a portable power drill to turn the drive socket.