They are the same as the SK, J-Blue Arrow, Kangke, V-Mar, and Lincoln engines.

You get mixed reports from OK to stay away.

The Direct Connection variety goes back a few years and are not as good as the current engines from J-Blue Arrow.

Direct connection themselves have not had any for 5 years that I know of and they had these for a few years before they were sold.

They are a Hobby Shop in Westerville Ohio called Capstone Hobbies.

Enjoy,

JIm