The Kupo Universal Single LED Tube Mount Holder with Detachable Baby Pin features two built-in spring metal clamps and is designed for quickly mounting those major brands of T-12 LED Lamp Tube Diameters from 38 to 42mm. Features rubber pads equipped inside the clamp that protects LED Tubes from scratches. Equipped with a detachable 5/8” (16mm) baby pin on the plate for converting this holder with other accessories or easy storage. A 'must have' to hold an LED tube on a C-Stand with a Grip Head or any equipment that comes with a 5/8”(16mm) baby receiver. The distance from clamp to clamp (center to center) is 47mm. The length of 5/8” (16mm) baby pin is 3.54in (90mm). Supports up to 7.7lbs (3.5kg).