great durability

13mm and 15mm

A great addition to any ParkTool work stand

Stainless Steel mounting hardware included

If you love gravity type riding and are looking to upgrade

Giro Quarter Helmet - L - Matte Black - AS-NZS 2063-2008 Standard Do Not Ship Internationally great durabilityGiro's lowest profile helmet, ever! The Quarter is optimized for street, skate park, and dirt jump riding. Capable of taking multiple impacts, the external shell is abrasion resistant, so no matter what you hit your head on, this helmet will keep functioning and keep looking good while doing so. Multiple sized, replaceable, sweat absorbent foam pads help keep your head cool and provide that perfect fit.