210pcs m2.5 stainless steel round head bolts and hex nuts screw connector fastener

organized by size in a transparent storage case for quick access and store. can attach to the mating material stably without the risk of the fastener becoming dislodged. made of 304 stainless steel, durable to use, environment-friendly, no pollution, high hardness. the moderate and clear hex cap heads can make your working more easily. there are 5 different sizes in one set to meet your various needs..syi