Juego hexagonal de enchufe de cabeza Allen de acero de 200 piezas Tornillo de grupa Punto de taza Caja surtida M4 M6

300pcs Threaded Insert M2 M2.5 M3 M4 M5 M6 Insert Nut Brass for Plastic 3D Parts. 20PCS M4 4mm. 20PCS M4 6mm. 20PCS M6 6mm. 20PCS M6 10mm. 3: Equipped with a plastic box, you can classify Hex Socket Set Screw in an organized manner, more convenient to carry and take out.

eBay