cordless drill driver machine battery operated with 1/2-inch chuck size, battery voltage: 18 v (lithium ion), chuck capacity: 1.5 (min) / 13 mm(max), screw diameter: 10 mm with two batteries, charger and carrying case equivalent to bosch model no. gsr 185 li professionalmake acceptable: bosch, dewalt, milwaukee, makita.oem or authorized dealer only to quote with documentary evidence.