Product reviews:
Bicycle Seatpost Shim Adaptor 27.2 to 30.9 to 31.6 shim
30.9 to 31.6 shim
Montague
2025-07-30 iphone 11 Pro Max
Bike Seatpost Sleeve Shim 30.9mm~31.6mm 30.9 to 31.6 shim
30.9 to 31.6 shim
Gregary
2025-08-04 iphone 11 Pro
Fouriers Alloy Bike Seatpost Shim 30.9 to 31.6 shim
30.9 to 31.6 shim
Fouriers Seatpost Shims 31.6mm to 30 30.9 to 31.6 shim
30.9 to 31.6 shim