Upper: 1-1/8"" / Alloy cup / Sealed Bearing Bottom: 1-1/8"" / Alloy cup / Sealed Bearing w/5.5mm Alloy Top Cover Stack Height 7.2+6.1=13.3mm
CHEX-1286B
w/8mm Alloy Top Cover, S.H.=15.8mm
CHEX-1286C
w/15mm Alloy Top Cover, S.H.=22.8mm