Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Skills_Required_To_Fix ( skill_id VARCHAR )
TABLE: CREATE TABLE Skills ( skill_id VARCHAR, skill_description VARCHAR )

### Question ###
Which skill is used in fixing the most number of faults? List the skill id and description.

### Accurate SQL ###

SELECT T1.skill_id, T1.skill_description FROM Skills AS T1 JOIN Skills_Required_To_Fix AS T2 ON T1.skill_id = T2.skill_id GROUP BY T1.skill_id ORDER BY COUNT(*) DESC LIMIT 1