The second generation CAGE clamp is even lighter! The Oath double clamp is BOLD, STRONG LIGHT. You might be wondering how this is possible? Utilizing our team of knowledgeable scooter nuts & manufacturing experience, we re confident we ve nailed it. The Cage is the perfect combination of durability, strength & design weighing only 85g. Forged 6061 T6 Aluminium Large M8 bolts Standard bar shim included Oath alignment system compatible WEIGHT: 83g/2.92oz COMPATIBLE: Oversize 34.9mm Standard 31.8mm (shim supplied)