Enter the RYOBI 18V ONE+ System with the RYOBI 18V ONE+ HP Brushless 8-Tool Combo Kit - 1/2" Hammer Drill, 4-Mode 1/4" Impact Driver, 4-Mode 1/2" Impact Wrench, 7-1/4" Circular Saw, Reciprocating Saw, 4-1/2" Angle Grinder/Cut-Off Tool, Multi-Tool, LED Light, 18V ONE+ 4Ah Lithium-ion HIGH PERFORMANCE Battery, 18V ONE+ 2Ah Lithium-ion HIGH PERFORMANCE Battery, Charger and (2) Tool Bags. ONE+ HP Technology delivers more power, runtime, durability, and speed utilizing brushless motors, advanced electronics, and HIGH PERFORMANCE lithium technology. 18V ONE+ HP tools are designed with high quality materials to deliver greater durability in the most demanding applications. Backed by the RYOBI 3-Year Manufacturer's Warranty.