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.