3M earplugs foam type 1100 with string

[Features]
Made of high-density material, these smooth and soft earplugs fit snugly in the ear canal.
From the low range to the high range, it exhibits stable and excellent sound insulation performance.
Smooth and soft earplugs with an NRR value of 29dB.

[Use]
-

【specification】
Code: Yes (600mm)
Size: free

[Specification 2]
NRR value: 29dB
Sound insulation per ANSI S3.19-1974

[Material/Finish]
Earplug body: Polyurethane (PUR)

[Set contents/accessories]
-

【Note】
This product is not intended for general consumers, so there are no indications or instruction manuals for general consumers.