These big steel balls are around two inches wide and weigh well over half a pound each. There's something satisfying about the heft of solid steel. That said, they're not a beginner toy. There's no retrieval string. So don't insert them if you don't have an idea as to how you're going to get them out again.
Titanica Steel Balls Specs and Benefits:
Size: Each ball measures 2 inches in diameter
Material: Carbon steel
Disclaimer: Carbon steel has been shown to trigger sensitivities in some individuals and is not designed for extended or long-term wear. For these reasons, we recommend using these items inside a condom.