20mm 12-Point Metric ASD Combination Wrench - Stanley Proto Industrial Tools

The Stanley Proto J1220MASD 20mm 12-Point Metric ASD Combination Wrench is a professional-grade tool designed for demanding automotive and industrial applications. This combination wrench features both an open end with an Anti-Slip Design (ASD) and a 12-point box end with the Torqueplus™ system, engineered to provide superior grip, enhanced torque application, and reduced fastener damage. Its durable construction and precision design make it an essential tool for mechanics and technicians seeking reliable performance in challenging work environments.

Key Features

• Anti-Slip Design (ASD) Open End: The open end incorporates an Anti-Slip Design that provides a secure grip, preventing slippage and increasing user safety. This design includes a locking groove and an arched surface that spreads force over a larger contact area, helping to prolong fastener life by avoiding damage to fastener ribs or serrations.
• Torqueplus™ Box End: The 12-point box end features the Torqueplus™ system, which allows technicians to apply up to 15% more torque to fasteners. This design reduces the risk of rounding worn or damaged fasteners and provides a better grip, even on those with minor wear.
• Corrosion-Resistant Satin Finish: A satin finish provides enhanced corrosion resistance and offers a slip-resistant grip, ensuring durability and comfortable handling in various working conditions.
• Versatile Fastener Engagement: The 12-point box end is designed to fit 4, 6, and 12-point fasteners, offering fine indexing for improved speed and access in confined spaces.
• Professional Grade Construction: Manufactured from alloy steel, this wrench meets ASME B107.9 (now ASME B107.100) specifications, ensuring a high level of quality and performance for professional use.

Applications

This 20mm metric combination wrench is ideal for professional technicians and mechanics working on a wide range of vehicles and industrial machinery. It is particularly effective for tasks involving stubborn or damaged fasteners, as well as fasteners made from softer materials, where the Anti-Slip Design and Torqueplus™ system provide crucial advantages in preventing rounding and enhancing grip. Its versatility makes it suitable for engine repairs, suspension work, machinery maintenance, and assembly operations where precise torque application and fastener integrity are critical.

Specifications

• Length: 11 inches (290.2 mm)
• Weight: 0.55 lbs (0.249 kg)
• Opening Size: 20mm
• Socket Type: 12-Point
• Standard: ANSI Spec.: B107.9 (now ASME B107.100)
• Head Outside Width (C): 42.9 mm
• Head Outside Width (C1): 30.1 mm
• Head Height (D): 9.1 mm
• Head Height (D1): 12.3 mm
• Throat Depth (B): 25.0 mm