3/8"Sq Drive 16 and 21mm Chrome Vanadium mirror finish spark plug sockets, suitable for 10 and 14mm spark plugs. Rubber sleeved T-Handle Bar is designed to allow maximum leverage to be applied. Ideal for use in confined areas with the 360° Universal Joint. Internal rubber sleeves in the sockets hold and prevent damage to the spark plugs. Features & Benefits:3/8"Sq Drive 16 and 21mm Chrome Vanadium mirror finish spark plug sockets, suitable for 10 and 14mm spark plugs.Rubber sleeved T-Handle Bar is designed to allow maximum leverage to be applied.Ideal for use in confined areas with the 360° Universal Joint. Internal rubber sleeves in the sockets hold and prevent damage to the spark plugs.Model No. SMC57 Specifications: Model No SMC57 Brand: Sealey Nett Weight: 0.35kg