Our M18™ 4-Tool Combo Kit includes the M18™ Compact Brushless 1/2" Hammer Drill, M18™ Compact Brushless 1/4" Hex 3-Speed Impact Driver, M18™ Brushless 7-1/4" Circular Saw, and M18™ Hackzall. The Compact Hammer Drill is 5.8" in length and lightweight at 2.3 lbs without a battery allowing for excellent control, especially while working in overhead or tight spaces. Our cordless 3-Speed Impact Driver measures only 4.4" in length and 2.1" wide, allowing for better access in tight spaces while being lightweight and portable. The Brushless 7-1/4" Circular Saw delivers up to 40% more power than circular saws with brushed motors while giving you up to 30% more run-time. The M18™ Hackzall gives you 0-3,000 strokes per minute while its 3/4" stroke length allows you to perform fast cuts through a wide range of material such as wood, metal, and PVC. The REDLINK™ Intelligence optimizes how our M18™ REDLITHIUM™ batteries work with the tools for best-in-class performance. This kit includes (1) M18™ REDLITHIUM™ XC4.0 Battery Pack, (1) M18™ REDLITHIUM™ CP2.0 Battery Pack, M18™ and M12™ Multi-Volt Charger and Contractor Bag. The M18™ 4-Tool Combo Kit is part of our M18™ system, fully compatible with over 250+ solutions.