Hi…..friends here i will show how create a stock vector illustration 3d baby instrument images.
In this tutorial you will learn how to create a baby instrument quick and easy.
[1]-Choose the Box and create two boxes with the following size
Now place like me 
[2]-Create two more boxes and place like me 
[3]-Create box with the following size and place like me 
[4]-Create two cylinder with the following size and place like me 
[5]-After that go to the boolean now boolean the cylinder like me 
[6]-Your object should like this 
[7]-Now go to the array and open the array now use the following setting 
[8]-After that your object should like this 
[9]-Create sphere and cylinder with the following size and place like me 
[10]-Make the materials like me 
[11]-Now you are done it enjoy the final output as shown below 