Klenk MA77550 Combo Drive Tool 

• Get four tools in one and avoid carrying unnecessary tools.
• Duct Puller makes joining duct ends together easier so drives can be inserted.
• Folding Tool is invaluable for making quick easy 3/8" folds.
• Scribe function lets you make accurate circles and straight lines without searching for another straightedge or template.
• Ruler helps you make quick measurements; 10" long with engraved 1/4" markings.
• Weighs just over 1/2 pound; easily portable, won't weigh you down.