The 540A-4 C-Clamp from WALTER MEIER MFG INC WMH TOOL GROUP features an opening capacity of 0 to 4", making it ideal for securing materials during woodworking or metalworking projects. Constructed from high-strength steel, this clamp offers durability and reliability under pressure. The ergonomic design ensures ease of use, while the smooth screw mechanism allows for quick adjustments. Compliant with industry standards, the 540A-4 is a must-have tool for any workshop, providing secure clamping for a variety of applications.