Industry Nine A318 Stem - 30mm 31.8mm Clamp +/-4.4 1 1/8" Aluminum Black CheckoutSpec= For all 2015+rear derailleurs New raw materials provide durability

New raw materials provide durability and wear resistance without compromising grip properties in extremely wet conditions

Designed with a double layer for extra insulation

Aluminum cover and adjustable aluminum pull lever

Four of the holes are threaded and one is a normal through bolt hole (done for Surly compatibility)

Industry Nine A318 Stem - 30mm 31.8mm Clamp +/-4.4 1 1/8" Aluminum Black CheckoutSpec= For all 2015+rear derailleurs New raw materials provide durabilityIndustry Nine A318 Stem 30mm 31. 8mm Clamp + 4. 4 1 1 8" Aluminum Black. Industry Nines A Series mountain bike stems are crafted from domestically sourced 7075 aluminum billet into a svelte design achieving a nexus of form and function. Using advanced manufacturing techniques honed over decades in our CNC machine shop we continue our proud tradition of offering riders uncompromising components. The A35 and A318 utilize either a 35mm or 31. 8mm