Promax Headset Adapter 1 1/8"-1" length-4-00 Caliper fixing bolt_Tool size: **

Caliper fixing bolt_Tool size: ** 4 mm

36 Hole with 9T driver

Top Tube: 20" (507mm)

The bolts feature laser-etched logos and are easily installed with a 5mm Allen key

25" rear chainstay as well as the addition of a 22" top tube Pro XXXL

Promax Headset Adapter 1 1/8"-1" length-4-00 Caliper fixing bolt_Tool size: **The Promax Headset Adapter 1 1 8" 1" at J&R Bicycles is a practical and affordable solution for riders looking for compatibility between different headset sizes. This adapter seamlessly bridges the gap, enabling the utilization of 1" threadless headsets in frames specifically designed for 1 1 8" headsets. The durable design ensures a secure and effortless fit for budget friendly convenience. Details: Allows the use of 1 threadless headsets in frames