The plastic fitting stems are designed to help with insertion and removal of the ear tips, even if wearing gloves, helping ear tips stay clean longer. The ultra-soft conical shaped ear tip with raised ribs that look like screw threads and the fitting stem in the shape of a Phillips head screw provide an overall look that might appeal to some users to help with compliance. The large cone shaped ear tip is designed to help fit a variety of ear canal shapes and sizes. This product is EARfit testable to help validate the level of protection the individual user is getting.
3M 92952, E-A-R Skull Screws Earplugs P1301, Corded, 480 Pair/Case, 7000127181
$415.32
Factory Stock, 7-10 Day Leadtime
3M E-A-R Skull Screws Earplugs bring rugged style as well as noise reduction. Even though they look like threaded metal, these ear tips are made with ultra soft foam to help comfortably protect the wearer. The large foam ear tips of these push-to-fit earplugs are inserted into the ear canal with a simple push of the firm plastic fitting stems.

Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade Nitro Series DGR31 .3hp, 16,000 RPM, Right Angle Die Grinder, 1/4 Collet
Air Turbine Tools 200SV - 1/8" Straight Hand Tool Series, 50,000 RPM, 32060
3M 40466, VentureClad Plus Insulation Jacketing Tape Embossed 1579GCW-E, Natural, 30 in x 25 yd, 7100214292
3M 52754, Inhalation Valve 7582, Replacement Part, 7000002158, 10 EA/Bag
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
Dynabrade 95684 1/4" Male Coupler 