This listing is for a set of two SanDisk Cruzer Glide 16GB USB 3.0 flash drives in black. These drives are compatible with laptops and have a USB specification of 3.0. The item length is 2.37 inches and the storage capacity is 16GB for each unit. The transfer rate is 150 Mbps and the read speed is 500MB/s with a write speed of 4x. The interface is USB and the features include a removable design. The drives are part of the SanDisk Cruzer Glide product line and are sold as a unit type with a quantity of two. Personalization is not included with this purchase.