7mm 4.6mm 4.1mm Engine Brake Adjustment Tools fits Cummins ISX Detroit DD15 DD16

4.1 mm (0.1614 in) spanner for DD15 & DD16 engines built before HDE0077481, set the lash to 4.1 mm (0.1614 in). 4.6 mm (0.1811 in) spanner for DD 15 & DD16 engines built starting with HDE0077481, set the lash to 4.6 mm (0.1811 in).