The 44070 Conical Sealed Foam Swabs are constructed from reticulated 100 pores per inch medical grade polyurethane foam which features the best open cell structure, providing excellent particle entrapment characteristics. The head is thermally bonded to the handle without using adhesives. The conical head tapers to a fine point for precision cleaning of hard to reach areas. Traps surface particles while cleaning; fiberless construction does not generate loose fibers or particles; no adhesives or binders are used in the construction; good for tight tolerance work. 500 swabs per bag.