Boveda 49REFILL 2-Way Humidity Control Refill 49% RH - 4pk

49% Refill pack for Boveda WDKIT492

The Boveda two-way humidity control kit is the perfect way to protect your wood instrument against cracking. It maintains a humidity level of 45%-55%, simply by keeping it in y our instrument case. This kit is ideal for all wood instruments (violin, viola, cello, clarinet, oboe, guitar, ukulele, etc).