Makita is the leading manufacturer of professional power tools on the market. The AT638A narrow crown stapler operates at pressures of 70 to 120 PSI or 4.9 to 8.2 bar. The AT638A is equipped with easy to see slim nose, conveniently located push button type air duster for continuous operation, tool-less driving depth adjustment controlled by turning a dial and tool-less staple jam clearing. The AT638A is operable in bump fire mode (contact actuation mode) or single mode (sequential actuation mode); bump fire mode drives staples repetitively for quick Operation and single mode drives one staple by one sequential operation. The protective bumpers on the AT638A protects the work piece and body from scratches and damages, and nose adapter prevents the work piece from scratches and damages. AT638A has a viewing window for checking the remaining nails and an empty indicator turns to red when the remaining number of staples in the magazine becomes low. Air duster; by pushing the push button, air from the compressor can be by-passed into the air duster nozzle. 1 year manufacturer warranty.