This is a single ten sided die with regular numbering
. The numbers of each set of two opposing faces summes to 9. This type of d10 is generally used in tabletop roleplaying games.
The metal version of this d10 measures about 27 mm (1.1 inch) from point to point, and about 14 mm (0.6 inch) across opposing sides. Printed in steel it weighs about 4 grams. The die is designed to be well balanced and to give a fair roll.
This design is also available
in a version with the numbers oredered in a spindown pattern, to be used as a life counter in games such as Magic: the Gathering.
The design of this die is meant to fit with the visual style of the latest expansion set for Magic: the Gathering, called Kaladesh. See here
for all my Kaladesh themed dice.