These cotton-tipped swabs come in sterile, hermetically-sealed, single-use packages. Each envelope of swabs includes two individual swabs, allowing for duplicate sets of evidence: one to be used as a standard and the second for any testing that may need to be performed. The wooden stems are easily breakable for storage in swab boxes or for use in testing, where the entire stem may be an obstruction. Each box includes 50 two-pack envelopes of swabs.