The BLACK & DECKER BDCDMT120TS Matrix Combo Kit - 20v Drill and Trim Saw features the innovative Matrix Quick Connect System, which allows the user to add different heads for different jobs and applications. The Powerful 20v MAX motor provides enough power for a full range of applications & attachments. This unit operates on a lithium ion battery which is always ready and holds a charge up to 18 months. This kit includes the 20V MAX Power Unit as the base, along with the Drill/Driver attachment and the Trim Saw attachment. The compact and lightweight design allows users to carry out drilling/driving tasks in confined spaces and with ease. With a high-performance motor this drill/driver can run at 0-800 RPM, features a 3/8" chuck along with 10 clutch settings. This is a perfect tool for drilling holes and fastening hardware with wood, metal, and plastic. The Trim Saw attachment also has a lightweight, compact design for comfort and control. On the 20v base power unit, it can operate at 0-3400 RPM. Its spindle lock button allows for single-wrench bit changes. This is a powerful saw designed to be use on plywood, panelling, and fence boards.