Pinhead Seatpost Clamp Lockset for HSD and GSD | Tern Store USA
Pinhead Quick-Release 4-Pack Locks
Today I installed pinhead locks to my RadExpand 5 seatpost and front wheel. Those were the only parts compatible, but feels justified for the cost of replacements! : r/RadPowerBikes
Pinhead Seat Post / Saddle Lock
Keep Your Bike Seat Locked and Safe - Bike to Everything