• Humanized design: 4-position switch to control the amount of adhesive. Easy to install and use. Ergonomic handle for added comfort. Quick change of applicator wheel for inner corners, reversible with flat applicator wheel. • Adjustable handle strap: Drywall tape tool with single-lock lid, easy and quick to open. Adjustable strap for use with both hands, allowing precise and comfortable work. • High durability: Made of high-quality reinforced PP material. The durable polycarbonate body eliminates dents and curved parts for longer life. • Operation method: Convenient construction: Clean drywall joints, fill with joint compound, apply white latex with a brush, and stick the joint paper tape in the center with the tool. Crack repair: Clean cracks in drywall, fill with joint compound, and stick the seam tape in the center of the crack with the tool.