These are T-Slot lock slides and knobs for the Chinese built CNC machines that are popular on EBay 6040, 6090 etc. I include a picture of the slots these machines use. These all print without supports and in any material you prefer. I have included files for M6 Hex head bolts, ¼ x 20 Imperial Hex head bolts and ¼ x 20 T-Slot head bolts. The t-Slot slides stop the bolts from turning on their own since nothing actually fits these Chinese systems.
The author marked this model as their own original creation.