Alloy spacer.

SPEC : AR-25.4-H (ID Ø25.6±0.2 x OD Ø32mm)
           AR-28.6-H (ID Ø28.8±0.2 x OD Ø32.5,Ø33, Ø34, Ø35, Ø36mm)
           AR-31.8-H (ID Ø32.0±0.2 x OD Ø38.8mm)
           AR-38.1-H (ID Ø38.3±0.2 x OD Ø44mm)
H : As Order
COLOR : As Order