The Professional Woodworker 3/8 inch 18 Gauge Crown Stapler features an operating pressure of 70-90 PSI and delivers T-50 2/8 inch Crown staples with precision. The 360 degree exhaust deflector keeps the exhaust at the top of the housing from disrupting your job. With a bottom load magazine, this nailer allows for easy replacing of the 100 count staple strip so you can return to your job quickly. The nailer also features a single sequential safety trip mechanism.