These Problem Solvers Notched Binder Bolts are precision-engineered for frames featuring integrated seat collars. Designed as a reliable replacement for proprietary or worn hardware, they provide the secure clamping force necessary to maintain seatpost height on traditional and modern steel or alloy frames.

• Durable Construction: Manufactured from high-strength CroMoly steel, these bolts are built to withstand high torque and resist stretching over time. The 8mm diameter ensures compatibility with standard frame tolerances while providing a robust interface for consistent tension.

• Precise Fitment Options: To accommodate varying frame thicknesses, these bolts are available in three specific lengths: 16mm, 19mm, and 21mm. These measurements are taken from inside flat to inside flat, allowing for a flush and secure fit within the notched integrated collar.