This is the NEMA 23 Threaded Rod Plate.  It can be used with V-Slot. When you need the power of NEMA23 stepper motors coupled with lead/acme screws for your projects, this is the plate you want The design of this plate allows for many possible mounting configurations. 6063-T6 Aluminum Black Anodized Finish 3mm~ (1/8″) Thick