http://mixerrzn5i6ypnujj2wtzioqnscfzpjooajl26w36kj74wehcqsdfeyd.onion/about.php
The Helix process uses a new proprietary technology which has never been used before with bitcoin tumbling. The coins are not just mixed but traded out for new ones before mixing. By trading dirty coins for out for new coins helix severs the taint trail. Quick After the intial transaction you send to Helix has 3 confirmations, the coins will be cleaned and sent back to you with 1 transaction immediately.