Do you need to send the knife in once you order the blade or do you send it in when they say it is ready? Just purchased a basically bnib small sebenza 21 insingo in S35vn made in 2016. I would like to eventually get a magnacut blade for it.Just email them and they’ll get the ball rolling for you. Just need basic info from you, name, address phone number. They also ask what thumbstud configuration you’d like. You pay when it’s ready.