The Zipp Service Course SL-70 handlebar features a road-ready design unrivaled fit and aerodynamic performance allowing you to achieve the ideal position on the bike. Constructed from 7050 series aluminum for lightweight performance , strength and durability Service Course SL-70 has an improved tilt angle of ten degrees to reduce the distance between your hands and hoods so you don't have to turn the bar to find the desired point. correct placement of the hood. The SL-70 service course provides precise steering with 70mm reach and 128mm drop. gives you a lot of room for adjustments. Shorter cyclists will find it easier to change gears , and larger riders can pair the handlebars with a long stem to achieve the correct aerodynamic shape.