No manual but easy enough to work out. You need to get the base screwed into the bottom bracket before you add the servo. The gears of the claw can stall, make sure the disc that attaches to the servo in the claw is secured tightly. I bought it without servos, of which I had a few lying around. The metal is quite light and it seems sprayed silver, but very good for the price.
I RECOMMEND TO ALL !!!!!!!!!