For 17 / 221 / 223 Rem., 17 Fireball, 17 Mach 4, 204 Ruger, 218 Bee, 222 Rem. Mag., 300 AAC Blackout, and others; 20 round capacity boxes; Made of polypropylene; These ammo boxes will not warp, crack, chip, peel, expand or contract; 5 sizes to choose from; All rounds are listed bullet up position; Made in USA; Clear Smoke color; One FL-1-42 will pad: 8 = J-20-XS-, 6 = J-20-M-, 5 = J-20-L-, 4 = J-20-MLD-, 5 = J-20-LLD-