These materials represent the Incarna i20™ approach based on d20 use.
Note that toolkits themselves DO exist for the related i20 Features, but the d20 proficiency translates to the i20 Feature, regardless of if the practitioner possesses a kit. Many i20 “kits” allow the use by Non-Proficient practitioners, with a penalty or other adjustment. Check online for a complete list of d20 equipment items.