Models Sainsmart Genmitsu 3020-PRO MAX CNC router 161 1830 15 5mm to 8mm rigid shaft coupler 18 899 0 X-Adapter Ver4 for HP DPS model power supplies 5 43 0 20 mm Aluminum Corner Bracket 12 561 1 GT2 5mm bore idler pulley 46 2062 7 GT2 5mm Bore Double Head Gear Pulley 20 816 4