It includes 4 sizes of pullers: 3", 4", 6", 8". 3" puller with a 4.3" max reach and 3" max spread. 4" puller with a 5" max reach and 4" max spread. 6" puller with a 7.3" max reach and 6" max spread.
OBDResource ST100 Spark Plug Tester Dual Hole Adjustable 0-6000 RPM 12V Gas Car
12V Car Spark Plug Tester Detector Ignition Tester Dual Hole Adjustable 9000rpm
12V Car Spark Plug Tester Vehicle Detector Ignition Tester Dual Hole Adjustable
OBDIISVS Spark Plug Tester Dual Hole Adjustable Ignition Tool for 12V Vehicles
Car Spark Plug Tester Dual Hole Adjustable Ignition Spark Plug Analyzer Detector
12V Car Spark Plug Tester Dual Hole Gasoline Ignition Plug Diagnostic Adjustable
