Product Information Fire: ZEIUS Name: 3D Printed Saddle Rail: Full Carbon 7x9mm Weight: 165g±10g Size: 255*150mm Colors: Black/white Applicable: Folding Bike / Road Cycling / Mountain Bike Cycling etc. T-40/ODI/ODI HY: carbon fiber bottom shell carbon fiber Guide TPU Weight: T-40 about 160g Please note: weight ±10g(manual gluing, the weight will be slightly different) Return & Refund Policy: We will be responsible product with quality problems, but not accept return or refund because of dislike color, dissatisfaction  with product or purchased wrong product. If seller and buyer reach a return & refund agreement, seller has the right to require buyer to return product in complete set to  seller.