These decorative logs are molded from real logs found in the wilderness. They look very realistic and are much safer for your pet than natural wood. They come in both a “Y” shape and straight. The “Y” shape is approximately 33” tall (36 1/2” with base), making them perfect for any cage 42” or taller. The straight log comes in either standard or jumbo. The standard log is 43 3/4” long with approximately a 3” diameter, and the jumbo is 52 3/4” long with approximately a 4” diameter. The “Y” shaped log is molded with a bolt in the bottom and comes with a wing nut to easily mount to a Replica Rock Base or Jumbo Dish.