One of a kind special oval shape that helps you climb easier and faster Allows use of an oval small ring with a round large ring, or 2 oval ringsOver 15% stiffer than Rotor Qrings due to thicker, 5mm construction Superb quality with great 6 point shifting design Reduces stress on knees and helps to maintain your legs fresher for longerProvides excellent weight to strength ratio 110mm 4-bolt36T7075ALBlackStandardUPC/EAN/GTIN: 5110846001583