Yes, it was the tool only, but it is part of the 18 volt Ryobi family.
Hi Elmac511. The instructions are under the loading caulk section in the owner's manual. Here is how: OPERATION LOADING CAULK See Figures 3 - 4, page 9. Lock the switch trigger by sliding the switch lock up. Using a utility knife, cut off the tip of the spout on a standard 10 oz. tube of caulk. Cut the tip at a 45˚ angle. Remove as little as possible, taking into consideration the size of the “bead” of caulk you need. Check for a second inner seal at the base of the spout. If found, insert the puncture tool inside the spout to break the seal before using. If using a partially filled tube, use the puncture tool to remove any hardened material from the tip. NOTE: An inner seal is usually found only in cardboard caulk tubes. While holding the caulk gun steady with one hand, pull the handle of the plunger rod away from the caulk gun. Continue pulling until plunger base reaches the back of the carriage frame. Load the caulk tube into the carriage frame, making sure it is well seated at both ends. Hope this helps!