Bell Division Helmet - L - Sky - AS-NZS 2063-2008 Standard YGroup_7033445646381 All new Copperhead steerer mount

All new Copperhead steerer mount stem

but as cassettes began to move past 10 speeds on their never ending quest to grow as large as your wheel

The rounded edges refer to the outside edges that have now been rounded off to allow easier wheel changes and make them less likely to inflict injury

Your bike should have this info listed in the manual or in the geometry chart on the manufacturer's website

Bell Division Helmet - L - Sky - AS-NZS 2063-2008 Standard YGroup_7033445646381 All new Copperhead steerer mountLOW PROFILE The Division BMX and action sports helmet marks the end of an erano more bucket like, ill fitting street and dirt helmets. This new design has a lower profile than most skate and BMX style helmets and is curved in more at the back and sides. The result is a head hugging shape that fits more securely and looks great too. SPECIFICATION WEIGHT: 434 Grams VENTS: 10