uxcell 10pcs 20 Series Compatible Drop In Type M4 T Slot Nuts 10mmx6mmx4.5mm Product Name : T Solt Nut;Thread Diameter : 4mm/0.16" Slot Width : 6mm/0.24";Total Size : 10 x 6 x 4.5mm/0.4" x 0.24" x 0.18"(L*W*T) Fit for : 20 Series Metrics;Material : Steel Color : SilverTone;Weight : 13g Package Content : 10Pcs x T Solt Nut