Item # ISC-1(discontinued) / Tools / Frame & Fork
Internal Seat Tube Clamp
The ISC-1 has been discontinued and replaced by the ISC-4.
Clamping directly onto frames made from carbon fiber and other ultra-thin materials can cause inadvertent frame damage. The ISC-1 is designed to allow you to hold frames securely without clamping onto a tube and to raise the bike to a more comfortable working height. To use, insert the ISC-1 into the seat tube, turn the knob to expand the tool, and then clamp into any Park Tool Repair Stand. Fits frames with seat tube diameters 25mm to 27.4mm.
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