M3 Nylon Hex Spacers Screw Nut Assortment Kit Accessories Set Description: Perfect for PCB stack,shell stack Color: Off-white RoHS compliant Stack height (L) vary from 6-20mm 8 sizes, 4 Male-Female type,4 Female-Female type: total 80pieces Male end thread length: 6mm Type Length Quantity Spacers Male-Female M3* 20mm 6mm 10 Spacers Male-Female M3* 15mm 6mm 10 Spacers Male-Female M3* 10mm 6mm 10 Spacers Male-Female M3* 6mm 6mm 10 Nuts M3 20 Screws M3* 20mm 20 Spacers FeMale-Female M3* 20mm 10 Spacers FeMale-Female M3* 15mm 10 Spacers FeMale-Female M3* 10mm 10 Spacers FeMale-Female M3* 6mm 10 Package Included: 1 x Box M3 Nylon Hex Screw Nut Assortment Kit.