works well. I like them very much.smooth flow no vibration.

My husband wanted me to update my review. He is very happy with these. He says they works great run smooth and produce nice tight lines. Thanks again. Personally I think the clear design is really nice.

My husband recently added a cartridge machine to his arsenal. He really likes the ease of use and quiet motor. It is smooth. These cartridges are my personal favorite. He is impressed by them as well. Your products are always top notch. Thanks so much.

Needles last throughout the whole tattoo !