The revolutionary design securely grips the Spark Plug at its hexagonal part The revolutionary design securely grips the Spark Plug at its hexagonal part by two stainless spring clips, An internal brass guide holds the clips in by two stainless spring clips, An internal brass guide holds the clips in place which ensures perfect alignment of the Spark Plug into the threaded place which ensures perfect alignment of the Spark Plug into the threaded plug hole of the cylinder head thus preventing thread damage, The brass plug hole of the cylinder head thus preventing thread damage, The brass guide also eliminates stress loading and possible damage to the ceramic guide also eliminates stress loading and possible damage to the ceramic insulator of the Spark Plug insulator of the Spark Plug The revolutionary design securely grips the Spark Plug at its hexagonal part b y two stainless spring clips, An internal brass guide holds the clips in place which ensures perfect alignment of the Spark Plug into the threaded plug hol e of the cylinder head thus preventing thread damage, The brass guide also el iminates stress loading and possible damage to the ceramic insulator of the Sp ark Plug,