I found the original model and printed them to try with my Pimoroni Picade Max Aracde. When connecting them to a horizontal connector the sleeve would not allow the pins to fully connect. I also noticed that when connecting sleeves to groups of cables and connecting side by side they would not fit due to the ridge on the original model so I made the sides flush.
Also on the 4 and 6 pins models, I adjusted the inside dimensions for the connectors to fit more securely inside the sleeve.
The author remixed this model.
The depth of the original model is 12mm vs 15mm the shorter depth allows for side-mounted connectors. The sides of the sleeves are flush and have no ridge to allow connectors to be side by side with other sleeves.