Features two Stainless Steel Butterfly shape wings, one on each side allow for quick installation without tool. Coarse thread is better for brittle material, ensure a long lasting hold for most projects. Product Name: Wing Nut; Material: Stainless Steel Weight: 54g; Thread Dia: 6mm/0.24 inch Main Color: Sier Tone Total Size: 25 mm x11mm x12mm/1.0 inch x0.4 inch x0.5inch(L*W*H) Package Content: 10 Pcs x Wing Nut Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.