Features: 1.Fittment:Use on ISX engine for brake adjustment, alternative to 4919693 Jake Brake Tool (3.8MM) feeler gauge. The 3.8mm area is precision ground to +/- .0005 inch. 2.Material:Use on ISX engine for brake adjustment, alternative to 4919693 Jake Brake Tool (3.8MM) feeler gauge. The 3.8mm area is precision ground to +/- .0005 inch. 3.Feature:Black non-slip PVC coated handle for easy use. Not only feel good in the hand but also have a good-looking appearance. .
