Real Time Capsule 3.5x11.75" Stainless Steel "Sally" Threaded - Great for Personal Papers, Small Media Sturdy: Polished Stainless Steel resists corrosion, best material for time capsules Can be buried: Airtight twist-off cylindrical container, extend life with sealant kit included Personal Size: Small Time Capsule - best for individuals & small groups What fits in it? 3.5" diameter x 11.75" tall o.d. fits thumb drives & letter sheets, trinkets, more Unique: archival storage, container can be reused - bonus booklets included!