Non-Slip Insert Design:Our bench clamp adopts non-slip rubber insert design, which has superior grip and provides a raised and level work . It is suitable for painting, sanding and more. Each clamp fits securely into a 19mm hole for easy installation and use. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Easy to Use: These bench stops can adapt to any workbench, enhancing your woodworking experience. Machined flat edges on each bench stop allow workpieces to dock securely., Manufacturer: PokFhgur