Copic offers replacement nibs for all of it's markers as well as tweezers for replacing nibs,
$5.60 $7.99
$2.07 $2.95
$2.77 $3.95
$3.47 $4.95
$2.77 $3.95
$3.71 $4.95
$4.17 $5.95
$4.17 $5.95
$2.07 $2.95
$2.07 $2.95
$2.07 $2.95
$2.77 $3.95
$2.77 $3.95
$2.77 $3.95
$2.07 $2.95
$4.17 $5.95
$4.46 $5.95
$4.16 $5.95