Yibuy One Pair Red Metal Pickups for Electric Guitar with Ceramic Magnets & Umbrella-head Screws The open design make the output volume clear and bright This humbucker open ceramic magnet guitar pickup with black umbrella-head screws fits for double humbucker guitar Fit for electric Guitar , with high output for punk, metal and other heavy metal rock style It is convenience for you to adjust the timbre with the adjustable umbrella-head screws