There are a quatrabajillion models of "USB MicroSD card reader" that are close to that same size.
https://www.amazon.com/Cablecc-5Gbps-Super-Reader-Adapter/dp/B01787LD3K/ref=sr_1_13?s=wireless&ie=UTF8&qid=1546255468&sr=1-13&keywords=Small+usb+micro+sd+card+reader
https://www.amazon.com/Kingston-microSDHC-microSDXC-MobileLite-FCR-MLG4/dp/B00KX4TORI/ref=sr_1_17?s=wireless&ie=UTF8&qid=1546255468&sr=1-17&keywords=Small+usb+micro+sd+card+reader
https://www.amazon.com/Kingston-microSDHC-Memory-Reader-FCR-MRG2/dp/B0028R3NCU/ref=sr_1_23?s=wireless&ie=UTF8&qid=1546255468&sr=1-23&keywords=Small+usb+micro+sd+card+reader
https://www.amazon.com/Bolayu-Super-Speed-Reader-Adapter/dp/B01GT57VOC/ref=sr_1_25?s=wireless&ie=UTF8&qid=1546255468&sr=1-25&keywords=Small+usb+micro+sd+card+reader
https://www.amazon.com/PNY-microSD-Elite-Reader-P-OTGCR32GMSC3-GE/dp/B01H5C78M8/ref=sr_1_39?s=wireless&ie=UTF8&qid=1546255570&sr=1-39&keywords=Small+usb+micro+sd+card+reader