Hougen 14260 Holcutter 1-7/8" Sheet Metal Hole Saw Charger this is the most compact

this is the most compact cordless drill in its class for the best access and maneuverability in tight spaces

Milwaukee 2475-20 M12™ Compact Inflator (Bare Tool)

Available in models for plastic pipe or metallic tubing

Description Voltage (V) Weight lb

Hougen 14260 Holcutter 1-7/8" Sheet Metal Hole Saw Charger this is the most compactHougen 14260 Holcutter 1 7 8" Sheet Metal Hole Saw Holcutters are not hole saws. They're precision ground, heat treated tools that easily cut thru the stock rather than ripping, tearing, and pushing thru as do typical hole saws. They can produce holes three times faster and cleaner than hole saws in sheet metal and have dramatically extended tool life, too. All sizes have a "shoulder" to prevent plunge thru, which is especially useful when drilling