Extremely fast boring / insertion cycle. A skilled operator can bore and insert a hinge in 3-4 seconds.  1-1/2 HP American Made Motor (Available In 110V, 220V Single Phase & 220V Three Phase)  -110V 3450 RPM 60Htz. 12.8/6.4 A . -220V 3450 RPM 60Htz. 4.9-4.6/2.3 A . High quality air cylinder  -80mm bore with 650ft./lbs of pressure @ 90psi  -Rated for 3.5 million 3 inch strokes. Machine ships completely assembled – a shipping weight of 175 lbs.  Easy change boring head for all popular hole configurations. As well as custom head design for specific boring applications.  Seven hole line drill head attachment with extension rails available.  Custom design and manufacturing of insertion rams for all types of hinges.  Two types of boring depth adjustment  -Drawbar style for quick and easy adjustment.  -Solid stop adjustment for the changing of door thickness applications.