The Porter-Cable PIN100 is a 23 Gauge Pin Nailer Kit. The hole produced with the pin is so small that a wipe with a damp rag makes the hole virtually invisible to the naked eye. The unit is small and lightweight but does not lack in performance or features. The PIN100 can shoot all 23 Gauge pin nails from 1/2 inches to 1 inch in length. It features an automatic magazine adjustment to accommodate the length of pin. All other pinners have a manual adjustment that takes time to adjust each time a different length of pin is used. The bottom load magazine holds 170 pins and provides a visual signal when the magazine is getting low on pins. The handle utilizes a rubber grip for comfort and better control and the rear exhaust directs the blow away from the user.