Models Sainsmart Genmitsu 3020-PRO MAX CNC router 158 1696 14 5mm to 8mm rigid shaft coupler 18 782 0 X-Adapter Ver4 for HP DPS model power supplies 5 41 0 20 mm Aluminum Corner Bracket 12 548 1 GT2 5mm bore idler pulley 44 1978 7 GT2 5mm Bore Double Head Gear Pulley 20 800 4