Tensho, or Turning Palms, Kata is a staple among many styles. It is very similar to Sanchin in that it is simple.
I have linked to a web site where you can see the application of Tensho for wrist grabs. I highly encourage all my students to get a copy of Nathan Johnson's "Barefoot Zen". It has some very good points about Kata practice and has been very influential to my thinking and interpretation of Kata as well.
The Link to the you tube is www.youtube.com/watch?v=6Kt6iCrS8O0
If you have any questions just let me know. Enjoy the link and follow it to their website. Very interesting stuff.
3 weeks ago