This item is for one 12 piece extension bar set. 1/4, 3/8, 1/2″ drive (other drive sizes in store) SIZE lengths-1/4″ drive-3,6,9,12.» 3/8″ drive-3,5,8,10″ 1/2″ drive-3,5,8,10″ This set made in taiwan and china. Chrome plated drop forged. Spring loaded ball bearing holds socket securely. Please check out our other store bargins visit store! THANK YOU