Description: Material:6AL/4V(TC4)Titanium Alloy,Grade 5 Wrench Size:Use 5mm Allen key Pitch:1.0 mm Size: M6x10/15/16/18/20/25/30/35/40/45/50/55/60/65mm (For lengths greater than 25mm the thread is about 23~25mm with the rest being unthreaded) Weight: About 4~10g/piece Color: Titanium/Gold/Rainbow/Blue/Black Price is for Only 1 bolt.