The max clamping distance of the clamp is 2.1in, as long as your workbench has an exposed flat edge, it can be installed to use. Such as a desk, workbench, shelf, or table. 【 3 Color Modes & Stepless Dimmable Magnifier Lamp】 - Bulid in 72 pcs super bright LED,Long-lasting and Energy Efficient, 3 color modes( white, white&warm, warm) to choose.
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