The CRL TL3 Series Vacuum Lifters are compact and quick-attaching for accurate positioning of small items in a multitude of applications. All are designed for gripping flat or curved glass on smooth, non-porous surfaces. The concave pad diameter is 3" (76 mm). The handle or ball can be removed to mount a camera or small spotting scope to surfaces that cannot be drilled. A very handy cup with many uses in and out of the glass industry. Includes pad protector.