You can use any skate tool.

Here's the one I have: SONIC Pro Inline Skate Tool - 9 Essential Tools - 4 mm Hex and T25 Torx - Bearing Pusher and Extractor https://www.amazon.com/dp/B005P9BY2O/ref=cm_sw_r_apan_i_D5Q8524B5HX1ER7BRS30?_encoding=UTF8&psc=1