This cactus grows in little columns and tends to grow into a tight clump of stems. It has cute little star shaped spines which are only a little bit pokey. As shown in the last photo, we also have another variant of Mammillaria elongata with smaller spines. (Shown together so you can see the difference.)
Your plant will be similar to the one in the photos.
Ships in a plastic pot with soil.
Vivid Root Mineral Mix or similar
Part to full sun
Let dry between watering, water deeply