This is a Snap-on hi-lok ratchet. The drive size is 3/8 inch. The model number is FCY72. It's a special tool due to the hi-lok drive, so if you're looking for one, please consider this. I purchased this new on Mercari, but the repair was completed without me using it, so it's being offered as new. The gear drive, etc., is of course in good working condition. In my personal opinion, I considered collecting it as a keepsake, but I think tools are meant to be used when needed. If you're looking for one, please consider this. #SNOPON #Snap-on