Models Sainsmart Genmitsu 3020-PRO MAX CNC router 133 1153 11 5mm to 8mm rigid shaft coupler 11 444 0 X-Adapter Ver4 for HP DPS model power supplies 5 33 0 20 mm Aluminum Corner Bracket 11 504 1 GT2 5mm bore idler pulley 42 1711 7 GT2 5mm Bore Double Head Gear Pulley 16 674 4