The bit chip is a decorative plate that sits atop the attack ring on plastic gen beyblades. These represented mythical beasts or animals. Two bit chips came with a beyblade, one with the symbol of the beyblade and one with either a aditional symbol or a bird.
Metal Bit Chips
Takara and Hasbro both produced bit chips made of metal. These gave a significant boost to performance and were widely used in both Compact and Defence combinations.
Hasbro Metal Bit Chips
The Hasbro version of the metal bit chip had a significant difference from the Takara mold. It had a small protrusion in the middle that was made of plastic, though this did not offer any advantages or disadvantages it was made to hold a 'Power Spirit', and it came in packs of four with said power spirit.
Takara Metal Bit Chip
This mold was made completely out of metal and so had a huge advantage over normal bit chips. However this part is extremely rare and commands an immense price on the secondary market, making it even more valuable.
Bit chips were nice to look at, and allowed a small more amount of customizing, although they can be crucial in matches, the metal bit chips are so rare that they are not taken into account when customizing.