DESCRIPTION: The Mueller D-4 Drilling Machine drills a hole from 5/8" to 2 1/8" in almost any size or kind of pressurized pipe. When using a service clamp and corporation valve, the D-4 machine is used to drill through the pipe to activate the service. A combined feed nut and yoke provides positive feed for the drill travel, and makes it possible to disengage the feed to permit the drill to be positioned quickly. A special mechanism on the feed yoke locks the drill to the yoke to prevent the drill from spiraling into the hole prematurely. Maximum working pressure is 500 psig at 100F or 250 psig at 375F. If you're unfamiliar with the Mueller D-4, you may want to read the Mueller D-4 Manual, and a better illustration of how it all works in the Mueller factory brochure. FEATURES: Manufactured by Mueller Company in the USAModel D-4No serial number visibleDrills and taps in almost any kind of pressurized pipes between 1/8" to 2 1/8"14" length of travelHand-operated with a ratchet wrenchIncludes Mueller 36196, 37902 and 37903 cutter arborsIncludes 11/16", 15/16" and 1 7/16" pilot drills along with an extra 11/16" bitIncludes Mueller ratchet and handle extension CA Inventory # 6303