The robot arm could be better. The plastics used are fragile and chip/break easy, I would maybe go for injection molded parts, metal, or better quality laser cut plastic. For the design of the arm it sits really high off the base and puts a weird tension on the lower servo and make the rotation of it really choppy, possibly add a gear drive at the base to compensate for the height. I did receive one bad servo in the kit. The kit is ok. With improved material and design it can be great.