Aluminum
80/20 1530-97 T-Slot, 15S, 97 In L, 1.5 In W, 3 In H
You will notice the silver surface has a satin sheen that looks understated yet refined.
Hubbell SHC1057 Liquid Tight Connector 1-1/2 In Cord Grip Cable Gland 1.5 NPT
The silver exterior is a nice touch that blends well with most industrial equipment setups.