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We need to know how your saddle & seatpost are fastened on your bike. For full security you need to secure both. Have a look at the images and click the relevant buttons to move on to the next step.
Most Saddles on modern bikes are fastened with hex bolts. Sometimes 1 bolt, sometimes 2. A hex bolt is fastened with a 6-sided (hexagonal) tool - hex wrench/Allen key.
Guts clamps are usually found on older, vintage bikes, rarely on more modern bikes.
Does your seat post clamp tighten with a hex bolt? A hex bolt is fastened with a 6-sided (hexagonal) tool - hex wrench/Allen key.
Does your seat post clamp tighten with a lever?
Is your seat post clamp integrated into the bike frame?
