This high VELOCITY tool gives narrow 1/4" crown users as well as 5/16" and 3/8" medium crown users, the ability to reach blistering speeds or choose a slower steady cadence. AUTOMATIC staplers must certainly be Speedy (up to 1800+ staples per minute) but also imbued with the ability to allow precise adjustments for mid range and even slow steady cyclic rates of fire. That is what Omer has uniquely created on these models with a suffix that ends i...n "V". You get a robust flat topped CAP mounted speed control with the ability to OVER RIDE automatic fire and switch to single shots when they are called for, by application demands.