... foam ear plug 1.Shape:bullet,cylinder,bell 2.NRR: 29db 3.Size:2.5*1.2cm 4.Fast rebound Pu foam ear ... plug pecification: - Material: PU foam- NRR:29db- Size: 2.5*1.2cm- Type: Fast rebound- Quality: meet ANSI S3.19 ... and CE EN 352-2- Shape: bullet,cylinder,bell,etc- Colour: orange,yellow,red ... requirement. 29db PU foam bullet shape ear plugs size:2.5*1.2cm fast rebound