This drywall corner tool set includes an external corner trowel and an internal corner trowel to meet different needs in drywall work. The blades are made of high-quality stainless steel, offering durability, corrosion resistance, and easy cleaning. The 90° angle design helps smooth surfaces faster. With certain elasticity, the outer blade is greater than 90° and the inner blade is less than 90°, allowing better wall adhesion and smoother work for concrete and cement plaster corners. The lightweight, comfortable ergonomic handle minimizes fatigue during use, and the end has hanging holes for easy storage. Suitable for both outside and inside corners, it works with various materials like drywall, stucco, and concrete.