• MOST COMMON SIZES - 3/8"Sq Drive 16 and 21mm Chrome Vanadium mirror finish spark plug sockets, suitable for 10 and 14mm spark plugs.
• MAX TORQUE - Rubber sleeved T-Handle Bar is designed to allow maximum leverage to be applied.
• ATTAIN ACCESS - Ideal for use in confined areas with the 360° Universal Joint.
• HOLD AND PROTECT - Internal rubber sleeves in the sockets hold and prevent damage to the spark plugs.