Bit Chips generally have such a small impact on play that they are the one exception from all Beyblade series to the "if there's a slot for a part, you need to fill it". That said, they do still have some effect, and there are variations and notes.
Used up until V-Force. Often accompanied by an Long Bit Chip - Single Sided with Inset Text on the same runner frame - with both brands using them.
Used for V-Force Pre-V2 era as well as G-Revolution releases. Arguably the most useful bit chip from a practical standpoint.
Double sided, sticker sheet comes with a circular barcode to place on the back for use with A-70 Bit Finder (the tab and cutaway on the chip assist with correct orientation). Very common in large part due to A-71 Bit Chip Collection 4 coming with runners of 6 black ones each.
Included in early SonoKong Releases, as well as the later Gold Series releases.
Perhaps the single rarest part in Plastics, the Metal Bit Chip was given out at early (pre-A-Series) tournaments. It is the heaviest Bit Chip, especially when considering the required Bit Chip Cover. It shares the same dimensions as the Short Bit Chip but is made of Zamak alloy (the same as used for all metal parts in first generation Beyblades)
From the Takara Bit Figure Collection Figurines (Products B-1 through B-4), and the Hasbro Power Spirits 4-Pack. The second heaviest Bit Chip, able to slot into a Regular SG or Heavy Metal Core when inverted, which is the only way to attach it to a launcher.