Good brass standoff kit: Good kit in a nice divided container, they have and material, strong, anticorrosive, compact and portable. Quality and Application: Great assortment of M3 nylon screw spacers, machine screws, washers and nuts. It comes in a super - organized container with dividers and closing tabs that keep firmly shut, preventing even the thinnest nylon hex spacers from moving around. There are ample quantities of each size, perfect for multiple projects, and you can combine different sizes to fill any gaps you encounter. Ideal for various DIY and repair jobs, but remember, as they're made of nylon, not metal, don't over - tighten. Applying too much torque strip the threads. A gentle hand when tightening ensures these motherboard standoffs you well. Come in Handy: Ideal for DIY buffs & electrical engineers. These nylon spacer standoffs are perfect for ham radio boards, IoT sensor setups, small - scale robotics, and DIY audio amps. Their non - conductive nylon body prevents short - circuits. Easily paired with M3 screws, they're high - precision, burr - and - threading - free. - , they protect against moisture. Packed in a divided box with a bin map, each m3 standoff in its slot, they keep assembly organized, a toolkit must - have. Name:Nylon M3 600 PCS Specifications: 30 * M3(6+6mm) 20 * M3(10+6mm) 20 * M3(15+6mm) 20 * M3(20+6mm) 40 * M3(6mm) 30 * M3(10mm) 20 * M3(15mm) 30 * M3(20mm) 120 * M3(6x1mm washer) 120 * M3(nuts) 70 * M3(6mm) 50 * M3(12mm) 30 * M3(20mm) Colour:Black Material:nylon Package Contents: 1 * M3 nylon column kit(600PCS) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.