Rubber Ring Silicone Dust Cover Seat Post Ring Cycling Seatposts Clamps Cover Bicycle Parts

Label:Yes Material:Silicone Suit for:30.4/30.8/30.9/31.6/33.9mm Seat Post Suit for:25.4/27.2mm Seat Post Package includes:1 X Seat Post Ring High elasticity, good compatibility Size S :25-30mm Size L :30-35mm Color:Red/Green/Blue/Black

If you don't know the size of seat post, you can measure it or buy both. Note: There is tolerance in manual measurement, please refer to the actual product.