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- Weight-optimized steel rings (largest 5 attached to aluminum spider)
EAN: 5051699047598
RS3653 FK9206
Manufacturer Part Number: 31425317018
Promax QR-1 Seatpost Clamp - 34.9mm, QR, Red Files & Reamers - Weight-optimized steel rings (largestQR 1 seatpost clamps are cold forged and CNC machined from 6061 T6 aluminum alloy. The QR 1, as the name implies, has a quick release lever, making seat height adjustments a snap. Weighing just 30 grams 1. 1 ounces in the 31. 8 size, its as lightweight as it is tough. The head of the lever and the face of the clamp are given a proprietary low friction surface treatment that ensures smooth lever action for the life of the clamp without the need for a
