The mass-abundance of the nine most abundant elements in the Earth's crust (see main article above) is approximately: oxygen 46%, silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61%.he mass-abundance of the nine most abundant elements in the Earth's crust (see main article above) is approximately: oxygen 46%, silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61%.
Choosing Disc Weight. Disc golf discs come in a variety of different weights. Most discs weigh between 165 and 175 grams. Some discs also come in special plastic blends designed to weigh less. The Professional Disc Golf Association regulates how heavy a disc can be based on the discs diameter.
Discmania offers some of the best disc golf discs on the market. They are located out of Europe, but work closely with Innova to produce and manufacture their discs. Discmania discs come in the same quality plastics Innova makes, but with their own unique designs. Discmania produces affordable and quality golf discs of every type. Here you will find high speed overstable distance drivers, understable drivers, stable fairway drivers, quality mid range discs, and accurate putters.