This item is a Jadever 3-in-1 manual staple gun, model JDGU3614.
Versatility: Designed to handle three different types of fasteners: U-shaped, T-shaped, and door-shaped staples.
Staple Size: Compatible with staples ranging from 4 mm to 14 mm in leg length.
Adjustable Force: Features a tension knob on top to adjust the driving force based on the material density.
Material: Constructed with a durable steel frame designed for upholstery, carpentry, and decoration projects.