Stand Part Park Tool 1971 Clamp Adapter D-Shape Seatpost Secure your seatpost A D-shaped clamp adapter to secure newer seatpost designs. The 1971 installs onto the clamps found on most Park Tool repair stands to more securely hold D-shaped seatposts by converting one jaw profile to a flat surface. This is useful for bikes with D-shaped seatposts and other non-traditional designs that would cause a less-than-ideal fit in traditional repair stand jaws. Key Features Designed to fit over a clamp's existing jaw covers Easy to remove and install by hand Compatible with — PCS-9.2, PCS-9.3, PCS-10.2, PCS-10.3 Compatible with — 100-3D Micro-Adjust Clamp, as found on PRS-2.2, PRS-2.3, PRS-3.2, PRS-3.3, PRS-33.2 Compatible with — 100-5D Micro-Adjust Clamp, as found on PCS-4 Compatible with — 100-25D Micro-Adjust Clamp, as found on PRS-25 and PRS-26 Specifications Part Number 5328514 Color Black Size 1971 Clamp Adapter for D-Shaped Seatposts Model Year 2026