100% Vulcan Made in the USA or Imported Features the superior Quatro-Carbon surface material technology is a 3k cross-weave with two bi-directional layers on each side. While all grades of carbon fiber deliver excellent aerospace-like weight-to-durability ratios, Vulcan’s Quatro-Carbon is even stronger – and more importantly provides far more softness and feel than other grades in its class. Features ZEP9 Polypropylene Honeycomb Core - Vulcan’s exclusive advanced-logic ZEP9 Polypropylene Honeycomb Core technology works in conjunction with the revolutionary Quatro-Carbon face to absorb vibration while providing superior feel plus maximum sweet spot area. Weight 8.3 oz.