Originally Posted By: mehullica
CDI is Snap-On's industrial brand that's very affordable. I've had my CDI 1/4" & 3/8" for about 6 years with no problems after everyday use.
I have a CDI 5-75 ft lb 3/8 drive, and I like it a lot. The switch on the head could be a bit better, but over all it works good. Spring loaded to adjust makes it easy to dial it in and out.