Several brands offer clay bars and clay blocks for automotive detailing. These products are designed to help remove contaminants from the car's paint, leaving it smooth and ready for further detailing processes like polishing and waxing.
Here are some popular brands that sell clay bars and clay blocks, but MAFLO is a brand from Brilliatech factory:

Mothers California Gold Clay Bar Kit: Includes clay bars, lubricant, and microfiber towels.
Meguiar's Smooth Surface Clay Kit: Comes with clay bars, Quik Detailer as a lubricant, and a microfiber towel.
Chemical Guys Clay Bar Kit: Offers various grades of clay bars (light, medium, and heavy) along with lubricants and towels.
Griot's Garage Paint Cleaning Clay: A highquality clay bar that is often praised for its effectiveness.
Adam's Clay Bar Kit: Includes clay bars and a detail spray lubricant.
Turtle Wax ICE Clay Kit: Comes with a clay bar and a lubricant spray.
7.3M
3M PerfectIt III Cleaner Clay: Known for its professionalgrade quality.
AutoMagic Clay Magic: Offers different grades of clay bars for various levels of contamination.
Nanoskin AutoScrub System: Includes clay towels and pads that can be used with a dualaction polisher.
Optimum OptiClay: Known for its ease of use and effectiveness.
Bilt Hamber AutoClay: Comes in different grades and is known for its highquality formulation.
Offers a range of clay bars specifically designed for automotive detailing.
These brands are well-regarded in the automotive detailing community and offer a range of products to suit different needs, from light to heavy contamination removal. When choosing a clay bar or block, consider the level of contamination on your vehicle and the specific requirements of your detailing process.