Professional-grade S2 steel construction delivers exceptional durability and precision. This 20-piece set features 1" PH2 Phillips #2 power bits, engineered for high-torque applications in power drills and screwdrivers. Ideal for construction, woodworking, and general assembly tasks. Heat-treated steel resists wear and breakage during repetitive use. Organize and store easily with the included compact case. Stock up for jobsite reliability.