Enter RYOBI's 18V ONE+ System with the 18V ONE+ HP Brushless 4-Tool Combo Kit – 1/2" Drill/Driver, 1/4" Impact Driver, Reciprocating Saw, Multi-Tool, 18V ONE+ 4Ah Lithium-ion HIGH PERFORMANCE Battery, 18V ONE+ 2Ah Lithium-ion HIGH PERFORMANCE Battery, Charger and Tool Bag. ONE+ HP Technology delivers more power, runtime, durability, and speed utilizing brushless motors, advanced electronics, and HIGH PERFORMANCE lithium technology. The 1/2" Drill/Driver delivers up to 20% faster drilling and up to 50% more torque saving time and energy per application. The 1/4" Impact Driver delivers up to 25% faster driving and 2,100 in-lbs. of torque giving this tool the power to drive larger fasteners through tough materials. The Reciprocating Saw delivers over 380 cuts per charge, saving time and energy on the job. The Multi-Tool delivers up to 30% faster cutting speeds with an adjustable speed dial, operating at up to 20,000 OPM. The 18V ONE+ 4Ah and 2Ah Lithium-ion HIGH PERFORMANCE Batteries deliver up to 30% more power than standard lithium and feature an integrated high visibility fuel gauge to monitor remaining runtime. Backed by the RYOBI 3-Year Manufacturer's Warranty.