The 3M Full Facepiece Button 7989, Respiratory Protection Replacement Part is designed to attach 3M Head Strap Assembly 78093S (sold separately) to the 3M Full Facepiece 7800S Series (sold separately). Color indicates facepiece size; red=small, yellow=med

3M 14593, Scotch-Brite Cut and Polish Disc, 3" x 1-1/4" x 1/4" A Medium, D5, 7000045941, Box of 10
3M 37004, Nose Cup Assembly 6894/37004(AAD), Replacement Part, 7000002034, 5 EA/Case
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
Insize 4120-16N, METRIC THREAD RING GAGE, NO GO, M16x2, 6928640341809
3M 37005, Head Harness 6897/37005(AAD), 7000002035, 5 EA/Case 