40 Gram Silica Gel Desiccant, 5-Pack - Dry-Packs - Fits Pelican Cases! Silica Gel 2 x 4 x 1/2 Inches Sturdy Aluminum Housing Moisture Indicator lets you know when you need to bake to reactivate! Cobalt Chloride Free - NO BLUE SILICA GEL! Identical Size as the Pelican 1500D Peli Desiccant