6mm hardware and a minimal CNC debossed brand. Standard bars only. NATIVE Stem SCS Clamp Black Specifications: Weight: 202 grams Hardware: 6mm clamp bolts Compatibility: 31.8mm diameter bars only (standard bars only). This simple and effective SCS clamp features 6mm hardware and a minimal CNC debossed brand. Although new and unused, it has been stored at home. Thank you for your understanding.