Bluesky Carbon Steel T Nut Slot Suitable for 20 Series European Standard Aluminum Profile Extrusion Slot. 100 Pack (M3) Material: Carbon Steel Color: Silver Shape: Hammer Head Weight: 62g Length: Aprrox.15.3mm/0.60" Width: Aprrox.7.7mm/0.30" Thickness: Aprrox.6.4mm/0.25" Total Size: 15.3x7.7x6.4mm/0.60"x0.30"x0.25"(LxWxT) Thread Type:M3 Package Content:M3x100pack