Note that I am selling a few of these; some are 6.2V and are as pictured, while a few have a slightly elongated shape and are 6.3V.  They are interchangeable and come from different manufacturing variants of the snap circuit products.

I sell many different Snap Circuits parts; I'm sure I have what you need!

Product details about Snap Circuits (whole set, not this one part only as listed):

• Electrical parts provide students grades 2 and up (age 7+) with hands-on experience designing and building models of working electrical circuits
• Snap-together parts require no tools and ensure correct connections
• Awards: The National Parenting Center-Seal of Approval, Dr. Toy 100 Best Children's Products, Dr Toy Best Educational Products
• Valuable component to a rounded STEM curriculum
• Build working models of a photo sensor, a flashing light, and an adjustable-volume siren. More than 100 exciting projects in all with included 30+ snap together parts