| 摘要 |
A right angle extension drill is provided and consists of an adjustable right angle drive unit removably connectable to a portable power unit so that the power unit can drive the right angle drive unit for drilling holes within various materials. Extension poles can be used so that the right angle unit can reach a side of an overhead beam to drill a hole therein. The uppermost extension pole can be curved at its distal end which is connected to the right angle drive unit so that it will drive holes perpendicular to a ceiling from a position either above or below the ceiling.
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