Skil 2899LI-04 20V Max Lithium Ion Pro-Series Cordless Drill Kit Two speed gear box and 24 clutch settings Two SB20A-LI 1.5Ah 20V lithium-ion batteries 20V Charger: SC20A-LI 2899 Drill Rpm: 0-500 / 0-1600 Rpm 30% longer run time and 25% greater power.