The eyelet is made of material with gunmetal finish. It is especially made for DIY kydex sheath. With a compatible eyelet hole punch tool kit to smooth and easy work. Kindly remind, the punch tool is easy to get rusty, but the rusty does not effect the function. Please do not buy if you mind! And please clean and lubricate after using.Thank you! 6MM EYELET: It is perfect for DIY 1.5mm kydex sheath. And also suitable for kydex sheath 1mm-1.8mm. DIY Supplies:Metalworking Type:Combination Application:Household Tool Set color:Photo color Material:Metal size:Inner diameter 6mm, overall length 6mm Package Contents: 50 x Eyelet 1 x Punch Tool Kit Only the above package content, other products are not included. Note: Light 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.