6pcs / set 40 Teeth 2GT Timing Belt Pulley Bore 5mm 8mm + 3pcs GT2 Timing Belts Length 350mm Width 6mm 175 Teeth Pitch 2mm powge 8pcs 20 teeth gt2 timing pulley bore 5mm 6mm 6 35mm 8mm 5meters width 6mm gt2 synchronous 2gt belt 2gt 20teeth 20t