VEVOR Table nail, compressed air nail machine for round head frame, complete from 50 to 90 mm, 21 degrees, double relaxation mode and depth adjustment without toolsHigh compatibility: This 21 round head frame nail maker is compatible with 3 types of nails: smooth nails, ring shank nails and threaded nails that meet different construction needs Dual Mode Trigger: Our pneumatic image nail maker is equipped with two trigger modes: sequential focus and contact focus. Users can easily switch between modes without switching the trigger, adapting to different work needs, and improving both flexibility and efficiency