ALLSTAR BREATHER FILTER Save Liquid error (product-badge line 32): -Infinity% $24.00 W/O SHIELD - $24.00 WITH SHIELD - $28.00 W/O SHIELD WITH SHIELD Option 1 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Allstar Breather Filters with rubber clamp on neck - measurement is ID of neck. 1" 1/2