Do more, cord less. Hilti 18 volt cordless combos are optimized for productivity and performance, with multiple tools based on the same battery platform. All are powered by Hilti's Cordless Power Care (CPC) Lithium-ion batteries, designed to deliver more performance with more work per charge. This 18 volt two tool combo includes the SFH 18-A CPC Hammer Drill/Driver and the SID 18-A CPC Impact Driver. The SID 18-A features a brushless motor, while the SFH 18-A features a high efficiency motor delivering reliable power for more work per use. Another way Hilti outperforms and outlasts.