Available as an assembled Module and as a DIY project.
This Module is currently available.
https://www.etsy.com/se-en/listing/1412897939/speedbump-mk-ii-envelopelfo-eurorack
Included in 2 Racks, 2 are public:
Nektar Panorama P1 USB MIDI Control
Electro-Voice 658H
Barber Tone Press Compressor
Tanglewood TW11-D-OL Winterleaf Solid
Analog Alien Alien Bass Station (ABS)
Clarinet Imperial 926 Boosey &Hawks