Size 4 Crochet hooks (East York)

I am in search of size 4mm crochet hooks. I like to teach others how to crochet when I am out and about. I use my own hook and give a hook and some yarn to the person I am teaching. I never ask for money when I teach and I always try to give the hook and yarn for them to practice on, along with my contact information for them to ask questions or schedule a time to have another lesson.
So, if you have any 4 mm crochet hooks laying around and not being used, please let me know! I can come to any ttc subway station that has an elevator to meet you.