A small amount of size that can be used without wasting any work you need. You can tighten multiple base materials from one side with one action. Clamping plate thickness: 0.06 - 0.19 inches (1.6 - 4.8 mm); Rivet length: 0.3 inches (8.0 mm); Rivet diameter: 0.16 - 0.16 inches (4.0 mm); Bottom hole diameter: 0.16 inches (4.1 - 4.2 mm); Shear load (N): Suitable fork thickness and bottom hole diameter meet our specified dimensions Enough safety rate. Please take into consideration before installation.