Mopeka Check Spacers are aluminum spacers that clip to the foot ring of cylinders (20, 30, and 40 lb [5, 7.5, and 10 gal] DOT cylinders). The spacers provide adequate space for the installation of the Mopeka Sensor and improve wireless range. This is a 4-pack, enough for 1 cylinder.
![Mopeka Pro Check Spacer *4-Pack [M2002001]](http://guidesupplies.com/cdn/shop/files/110132XL.jpg?v=1758685127&width=1445)
