The Linkstar BH-S4F8M-5 ¼” Female to 3/8” Male Thread Adapter transforms your ¼” male screw thread to a 3/8” male screw thread. The BH-S4F8M-5 can be used, for example, to mount an accessory with a 3/8” female thread onto a universal light stand with a ¼” male thread.