Uxcell a13010800ux0392 Male to Female Threaded Hexagonal Standoff Spacer (Pack of 20) Product name: brass hexagonal spacer; thread size: M4 male x M4 female Male thread length: 6Mm/ 0.24"; body length: 25Mm/ 0.98" Total size(approx.): 31 x 6Mm/ 1.2" x 0.24" (l*mad); material: brass