Most people won't drop $120.00 on a coreless motor for a tattoo machine. Myself I use them in all my machines. The Radio Shask motors I used them for years in the 80's when they were made by the Tandy Corporation in Japan before the Chinese came on the seen. I had a machine that was 10 years old and never burned up. Big was all I could find that was durable untill I found Faulhaber 5 years ago.