• Universal V-nails, 10.3 mm wide, compatible with most brands of underpinners, including Inmes and Cassese. • Suitable for hardwood and plastic frames such as ash, oak, walnut, maple, cherry, and plastic materials. • Made of high-quality carbon steel, they remain perfectly straight when inserted. • Designed to achieve the tightest corner joint in photo frames. • The tapered shape and elasticity of the steel allow the V-nail to expand outward as it enters the moulding and, as it contracts, pull the mitered edges together to close the corner joint. • Recommended for framers of any level, as they help achieve strong joints and reduce jams during work. • An essential and low-cost item for manufacturing hardwood and plastic frames.