For some reason I'm unable to post some pictures but maybe I can provide enough information. I would say it is a knock off of a Wilton Bullet vise. The only thing is it has no name brand stamped on it anywhere. The key under the tube has a date stamp of 8-87. And on the screw where the handle goes through is the number 900073BL. On one jaw is the number 121033 with a large S1 under it.on the stationary jaw is the number 1780. It appears to be a really well made vise with no slack in its movement. I will post some pictures when I figure it out again. Any ideas?