Deity Copperhead Stem - Blue - 31.8mm - 35mm x 0 Degree - 1 1-8th Inch eBay Once something does penetrate the

Once something does penetrate the tyre

8mm weighs approx 315g

inner bearing typeIgus LL-glide bearing

While sealant does a great job plugging holes

Deity Copperhead Stem - Blue - 31.8mm - 35mm x 0 Degree - 1 1-8th Inch eBay Once something does penetrate theDEITY's goal with the all new Copperhead 42mm length steerer mounted stem was to design a lighter sidekick to their beloved Cavity Stem, but the results delivered a stronger, refined, and lighter super hero that they just could not break. All their designs are tested to failure, but the Copperhead refused to give up! After millions of cycles on both stress and impact testing, this stem refused to give an inch. Don't get it confused the Copperhead is