Hello,
The accessories for this probe are listed in the Ordering Information of the datasheet: https://www.tek.com/en/datasheet/passive-10x-voltage-probe. Based on your request, I'm assuming that you are looking for the 6 in alligator ground lead and the retractable hook tip. The current part numbers for these accessories are 196-3521-01 and 013-0362-01.
To order these parts, you can call our sales team at 1-800-833-9200 option 1 or email buy@tektronix.com.