Can't reach or safely start spark plugs in deep recessed holes? This kit contains the tools to fit most spark plugs especially coil-on-plug. Tools are made of flexible, heat-resistant plastic to reach into recessed areas or over, under and around hot manifolds. Shaft is stepped to grip insulator. Non-slip, black grip surface for sure handling. Start and remove spark plugs in deeply recessed cylinder spark plug holes Set includes 3 and 6 plug starters 6 length is designed for coilon plug applications and other engines with recessed spark plugs The shorter version is for other applications where space is limited