you may be interested in this thread:Does anyone have any idea what the symbol on this headset adjusting race is? Is it and arrow or a funnel? From the look of it, it looks like an arrow pointing up but it could be a funnel pointing the wrong way. I am not entirely sure.Here’s the link to the listing where I found the photo:
Schwinn Stingray Krate Slik Chik Fair Lady Fork Bearing Race Nut
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Schwinn bottom bracket symbol