These 64GB USB 2.0 K&ZZ Metal Flash Drives are inexpensive, durable and fast - almost perfect. You will receive two identical discs except one is silver and the other is black. The body of the pad is made of metal and has a built-in hole for attaching a key fob, etc. The drive is protected from water, dust, shock and temperature. There are no markings on these discs, so they can be customized if desired. I use them to transfer model files to my 3D printers and am impressed with the transfer speed. At around $6.50 per disc I'd say it's a bargain.
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