Used on moulding for tightly fixing. No need to counterbore or countersink the boss hole because the insert has guide pilot. All nuts are made of high quality brass, which has high hardness, no deformation, durable and reliable for long use. Easy to install: From the moment that the insert has a valve conduit, there is no need to back-drill and counter-sink the hole. Can be installed by ultrasonic or heat in tapered bore wire, or molded in during . colour: gold Material: brass size: 0.57 x 0.46 x 0.46 cm Package Contents: 100 x embedment nut Only the above package content, other products are not included. 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. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.