ALLOY 30.9

 Box One Zero Offset Seatposts are 3D-forged from heat-treated 2014-T651 Aluminum for exceptional strength A proven, two bolt clamp design provides a stable and secure connection with your saddle, and an anodized finish and laser etched graphics give these seatposts a touch of style that would make an elegant addition to any bike Chromoly hardware 30.9mm 400mm Blk 2014-T651AL 0mm 297g ...

 Forged 6061-T6 Aluminum construction Lower clamp and post forged as one solid piece to greatly improve strength Micro-adjust 2 bolt hinged clamp design 30.9mm 400mm Blk AL6061-T6 0mm

 Forged AL6061-T6 alloy construction Micro-adjust 2-bolt hinged clamp design Extra-long 400mm post 0mm setback 30.9mm 400mm Silver AL6061-T6 0mm 326g

 Forged AL6061-T6 alloy construction Micro-adjust 2-bolt hinged clamp design Extra-long 400mm post 0mm setback 30.9mm 400mm Black AL6061-T6 0mm 326g

 3D forged one-piece AL7050-T6 construction Wide saddle clamp design reduces rail stress and flex Micro-adjust 2 bolt clamp design 15mm setback ISO-Mountain safety certified 30.9mm 350mm Blk AL7050 15mm

 3D forged one-piece AL6061-T6 construction Wide saddle clamp design reduces rail stress and flex Micro-adjust 2 bolt clamp design 15mm setback ISO-Mountain safety certified 30.9mm 350mm Blk AL6061 15mm

 Forged alloy construction Integrated index adjust seat clamp Weight: 325g 30.9mm 350mm Blk Aly 25mm 357g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 410mm Blk Aly 0mm 263g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 367mm Blk Aly 0mm 243g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 367mm Blk Aly 16mm 243g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 410mm Blk Aly 16mm 263g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 367mm Sil Aly 16mm 243g