Designed from simple, cheap, easy to source hardware. I get 90mm/s with this setup. Can print flexible filament as well. Bolts onto 20mm v-slot. Has a 11 tooth to 64 tooth ratio. Designed around an MK8 Filament drive gear. Check Details about the Reach 3d Printer on: www.Reach3dPrinters.comParts list includes: 1x Large Gear 64 tooth 1x Small Gear 11 tooth 1x Upper Plate 1x Lower Plate 1x Gear Block 1x Plastic Spacer 1x M5x50mm Partial Threaded bolt 1x M5x25 hex head silver bolt 2x M5x10mm bolt 2x M5 T-nut 3x M5 nut 1x MK8 Drive Gear 3x 625zz Bearing 2x Large Tension Spring 5x M3x8mm bolt 2x M3x50mm bolt 3x M3x25mm bolt (not pictured) 3x M3 nut 2x #4-1/2" wood screw 6x #10 washer 6x #6 washer Assembly instructions on www.Reach3dPrinters.com