We didn't find an exact match but here are some links you can try:

204 Ruger Unprepped Brass - 204 Ruger Brass 250/Bag
RCBS Shell Holder
Rifle Case Holders - 204 Ruger Fired Case Holder
Fiocchi FXT 204 Ruger 32gr V-MAX Rifle Ammo - 50 Rounds
Nosler Premium Brass Unprimed Rifle Cases, .204 Ruger, 50
Hornady Unprimed Cartridge Cases, .204 Ruger, 50