select id from where lcase(lang)=''

    Products number

    1/4" Inner - 1/4" Inner fitting

    5/16" Inner - 1/4" Inner fitting

    5/16" Inner - 5/16" Inner fitting

    3/8" Inner - 1/4" Inner fitting

    3/8" Inner - 5/16" Inner fitting

    3/8" Inner - 3/8" Inner fitting

    1/2" Inner - 1/4" Inner fitting

    1/2" Inner - 5/16" Inner fitting

    1/2" Inner - 3/8" Inner fitting

    1/2" Inner - 1/2" Inner fitting

    7/8" Inner - 5/8" Inner fitting

      Products number