Obut Atx

Pétanque competition balls ATX Ø 72 to 74 mm. Weight 680 to 710 g. Hardness: approx. 130 kg/mm². Special stainless nickel-chromium steel used in the aerospace industry and in nuclear energy. Yield strength at 0.2 % (100 kg/mm²). Exceptionally controlled balancing. Weight accuracy: ±2 g. Diameter accuracy: ± 20 hundredths of a millimetre. Balancing accuracy: unbalance < or = 0.5 % of the ball weight. Hardness accuracy: in the range of 38 to 41 HRC (tested on a TESTWELL machine). Golden satin finish. Rustproof through and through: requires only occasional maintenance.