Think you need to go to the swamps to have a crockin; good time; Look no further than the KNEX Beasts Alive Robo-Croc Building Set; This reptilian set allows you to build a motorized croc that slowly slinks towards you, plus ideas for two additional beasts, one motor, and over 170 KNEX rods and connectors. Models can be built one at a time. Requires two AA; batteries (not included). Build a croc with motorized walking action. 170+ parts, including knex rods, connectors and a motor; With motorized movement the gator slinks towards you, whipping its tail back and forth; Downloadable instructions for 2 additional models. Recommended for builders age 7+. One supplied. Size H22.86, W22.86, D5.08cm. Batteries required: 2 x AA (not included) plus . For ages 7 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.