FASTY's buckles are made of steel, which has many advantages over cast zinc buckles. A larger opening makes the strap much easier to thread through the buckles, especially if work gloves are worn. The buckles are both considerably stronger and lighter than a zinc buckle and have high corrosion-resistance. They are treated with one of the market's best and most environmentally friendly anti-corrosive coatings, which meets the automotive industry's strict anti-corrosion requirements. Sold in a 10 pack but can be retailed as individual straps