Makita Motor Advantage - Field-core interlocking steel laminations, dual ball bearing armature and large commutating surface resulting in the most efficient transfer of energy for increased power. Electronic Speed Control - Automatically applies additional power to the motor to maintain speed under load to complete the most challenging jobs. Variable Speed. Variable speed control dial allows user to match speed to application for versatility. Extended Life Brushes. Longer brushes for more work between service intervals and less downtime. 12 Bit Angle Settings. Bit can be set to 12 different positions for operating convenience. Automatic Brush Cut-Off - Protects brush - Protects commutator from wear. Includes: 11.0 lbs. SDS-Max - Demolition Hammer with Holster - HM0870C, Side Handle, Tip Grease, Cleaning Cloth, Tool Case.