The X-Series earmuffs are 3M?s latest advancement in hearing conservation. New technologies in comfort, design and protection all come together in this groundbreaking earmuff line. The X3B features a newly designed spacer to help improve attenuation without the need for a much larger cup or double cup design. This lightweight earmuff is designed for protection against hig H-level industrial noise and other loud sounds.
– The wire headband offers consistent pressure over prolonged wearing periods?
– Earcup pivot points tilt for optimum comfort and efficiency?
– Replaceable ear cushions and foam liners (hygiene kit HYX3)?
– Noise Reduction Rating (NRR)b 28 dB. CSA Class AL

3M 33440, Cubitron II File Belt, 33440, 80+, 10 mm x 330 mm (3/8 in x 13 in), 7100033195, 10 belts per carton, 5 cartons per case
3M 21751, Stikit Cloth Disc Roll 341D, 60 X-weight, 5 in x NH, Die 500X, 7000000249
Dynabrade 95544 Gear Grease, 2.5oz. Tube
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U
3M 71346, 675L, 1" X 120", 125u, Diamond Microfinishing Film Belts, 7010534823
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092 
