Multi-grip design works well even in oversized or egg shaped holes from repeated use, Lightweight aluminum 3/16" rivet with steel shank for added clamping force, Grip range of 1/4" to 3/8" works well for multiple layers of sheet metal, Now available in Black, White, Cobalt Blue, Red, Light Blue, Flat Black, Orange and Yellow, Offered in a variety of colors to match your color scheme.