This Master Model set provides a machined brass pitot tube that is superior to what can be produced in an injected plastic kit. This part is specific to the Hobbycraft / Academy series of B-58 Hustler kits (HC1260, HC1261, A4442, A12619) that was initially released in 2001.
Notable is the re-sealable packaging that Master Model uses that makes the part easy to review and then stuff it back into the package securely. You will want to be careful handling the metal pitot tube as its small size makes it an easy sacrifice to the carpet monster.