![SIX COLORED GLASS BUBBLES](http://www.magnumimports.co.nz/cdn/shop/products/six-colored-glass-bubbles-spirit-level-set_SOPFQOW0UGL2_{width}x.jpg?v=1640142192)
SIX COLORED GLASS BUBBLES
Six interchangeable glass bubbles (Spirit level) set with different colours to suit light conditions (light green, red and light blue).
These fit front tunnel sights: USA 426, USA 462, USA 467 and USA 457.
This is per each, advise what colour you want