The Baffle bolts (BB) are components of the lower internals of the vessel of Pressurized Water Reactor (PWR) nuclear power plants. They are subjected to ultrasonic testing (UT) inspection as part of the Long-Term Operation (LTO) of the PWR plants worldwide. Unlike other areas undergo inspection. usually there are more than one thousand bolts in a typical PWR reactor. https://homehardware4ues.shop/product-category/sanding-accessories/