1The Craftsman CMHT66720 4V MAX Cordless Precision Screwdriver is a versatile tool set that includes 25 pieces, including a charging base, USB charging cable, bit extender, bit storage, and various screwdriver bits. The 4V MAX Lithium-Ion battery provides 3-stage torque control and a speed of 230 RPM, making it ideal for precision screwdriving tasks. The straight design and keyless chuck size of 1/4 inch make it easy to use, while the 4 LED light feature ensures you can work in low-light conditions. This screwdriver set from Craftsman is a reliable and efficient choice for various DIY projects and home improvements.