TTi-180 Spinning Top Tritium Top SIlver with Gold Base The greatest and simplest educational toy in the world. Can combine onto each other like building blocks. Precise and exquisite. Made of one-piece 316L with CNC technology. Si3N4 beaded contact, resistant to blasting. Hand blasted, Original, PVD. Six colors : gray, silver, gold, black, blue, rose gold. Tritium lights in Tritium mod, self-illuminate over 15 years. Product Description Lit by tritium and crafted of perfectly-balanced steel and titanium, this TTI-180 Spinning Top is a force to be reckoned with. Small but powerful, it's sturdy, lightweight and sleek, with an inlay that glows in the dark, throwing neon light patterns as it spins, for a truly grownup desk toy. You might also have seen one in the closing shot of Inception. Product Details ColorsBlack Materials 316 L Stainless Steel, Si3 N4 Measurements 0.7"L x 0.7"W x 0.78"H 100% Authentic