Replaces harnesses with worn or damaged fastening straps. Maintains the right level of protection and comfort. Designed for use with the 3M ™ 7907S reusable full mask. Quick and easy placement. Increase the useful life of your equipment. The 3M ™ 7893 strapping harness is a quick and easy to attach spare part. It is specially designed for use with the 3M ™ 7907S reusable full mask. Make sure you have the right level of protection and work comfortably with the 3M ™ 7893 Strap Harness. Replaces damaged or worn parts, is easy to attach and helps increase the life of your 3M ™ 7907S Reusable Full Mask.