Metal (Mild Steel or Stainless Steel), 39" Long skewer to Barbeque or grilling need. You can choose metal and thickness based on food your plan to grill We have them available in 3, 4, 6. 8 or 10 mm thickness (0.1" to 0.4"). Different thickness skewers can be used for different cooking needs. Like thin skewer for small fish, veggies, paneer - normally meat or veggie small in size and loose shape or cut out wide if loaded on thick skewers. Thicker skewers can be used for chicken, turkey, duck or large pcs of veggie - which needs a wider or stronger hold. We have our skewers available in Round and Square (rectangle) shapes to give you choices to pick the right grip for your food to cook. If you experience food slips, we have the choice available with stopper to help avoid slipping the food as well. Our Skewers are made with an adequate sharp tip to help load the food and have a loop at the end to help you hand the skewers as well as pull from tandoor or skerers.