Loose FPC and FFC ribbon cables cause more failed connections than most technicians want to admit — the cable lifts a fraction of a millimeter mid-solder, the connector doesn't seat flush, and you're reflowing the same joint twice. The 2UUL FC01 solves that specific problem. It's a stainless steel clamp with a 20mm jaw width and a 40mm base, sized to grip the ribbon cable widths you actually run into on phone, tablet, and laptop boards without pinching or fraying the flex material. You set the cable in the jaw, lock it down, and the non-slip mechanism holds it flat and fixed while you work — whether that work is reflowing a display connector, mating an FPC to its socket, or holding a cable steady for a continuity check under the microscope. Because the clamp is compact at 40 x 16 x 54mm and light at around 17g, it doesn't crowd your board holder or preheater setup, and you can reposition it quickly between steps without it tipping or sliding on the mat. Screen repair technicians reach for this kind of clamp constantly: during a display or digitizer swap, the FPC connecting the panel to the logic board needs to stay perfectly still while you reseat or resolder it, and a hand alone can't hold that tension steady for the full repair. The same applies to charging port and battery flex work, where the ribbon runs close to the connector edge and any drift during soldering risks a cold joint or a torn trace. Under magnification, small movements look large, and a clamp that actually locks — rather than one that relies on spring tension alone — makes the difference between a clean first-pass repair and a rework. The FC01's jaw doesn't require constant hand pressure once locked, which frees both hands for the iron and solder, a real advantage when you're working single-handed on a busy bench. It fits naturally alongside PCB holders, hot air stations, and precision tweezers as part of a standard microsoldering setup, and it's the kind of accessory that earns its place because it removes one variable — cable movement — from every repair that involves a flex connector. Repair shops running high volumes of screen and connector jobs benefit from keeping a couple of these on hand, since technicians often need to secure two cables at once during a board reassembly. The build is straightforward and mechanical, with no batteries, calibration, or moving parts beyond the clamp mechanism itself, so there's nothing to maintain beyond keeping the jaw clean of flux residue. For a workshop handling display repairs, charging port replacements, or general board-level rework, the FC01 is a low-cost way to cut down on cable-related soldering errors and speed up repeat jobs where the same cable type comes across the bench every day.