Master Mechanic 4V lithium-ion cordless screwdriver, internal 1.5Ah lithium-ion battery, 1/4' hex drive with auto lock, 1 speed reversible, variable 180 RPM. Max torque 35 IN-LBS, LED work light with independent on/off switch. Flashlight in base, 90 minute USB charger, battery indication lights, soft rubber grip. Pivoting handle locks to straight or 90 degrees. Includes 20 bits: 20pcs 25mm bits: PH1, PH2x 2, PH3, PZ1, PZ2x3,PZ3, H3, H4, H5, H6,T15, T20, T25, T30,S4, S5, S6 packed in a clamshell.