These? http://trailheaddeflators.com/product.htm A link to a B.C. 4X4 parts supplier. http://www.rovingrecovery.com/deflators.htm Or... Staun Tire deflators? http://www.staunproducts.com/benefits.php I always just use a tire valve remover or depress the tire valve with a small Phillips screw driver... Buy that's always a pain in the arse and hit and miss as far as getting the air pressures the same for all four tires.