The Blue Spot Tools 4Pce 3/8" T-Handle spark plug wrench set is manufactured from heat treated carbon steel for durability then chrome plated to prevent corrosion. The set contains a T Handle flexy wrench which is perfect for getting into tight spaces, which also has a soft grip to aid user comfort and 3 of the most popular sizes of spark plug sockets all with internal rubber retention rings to prevent damage to the spark plug. Manufactured from carbon steel for increased durability T Handle flexy wrench which is perfect for getting into tight spaces Soft grip to aid user comfort 3 of the most popular sizes of spark plug sockets Rubber retention rings to prevent damage to the spark plug Chrome plated to prevent corrosion PACKAGE CONTENTS 1 x socket 21mm (13/16") , 1 x socket 18mm (11/16") , 1 x socket 16mm (5/8")