ctopogo 8pcs 1000mm 2040 v-slot extrusion aluminum profile, anodized linear rail for 3d printer frame, cnc machine, diy robotics & structural projects black 1000mm black 8 is up for auction in Industrial & Scientific. The current bid is $1.00, 99% below the $88.99 MSRP, in As Is condition. Bid on this item at our Vandalia - Industrial Park Drive location before the auction closes.