Items DescriptionMaterialGrade 10.9 carbon steelSurface:oxide blackSet A : whole 400pcsscrew 200pcs + nut 200pcs:Set B : whole 625pcsscrew 625pcsSet C : whole 1140pcs + 4pcs hex key (free)screw 380pcs + nut 380pcs + washer 380pcs + hex key 4pcs:Set D : total 2100pcs + 4pcs hex key (free)screw 700pcs + nut 700pcs + washing machine 700pcs + hex key 4pcs:FAQ:1.How long will my equipment ship out?We will ship out as soon as possible, Usually all the equipment can be ship out inside forty eight hours.2. Wholesalers and merchants are welcomed.For wholesale, simply please contact to us, we are able to provide discount. If you're a store and wish make your own business, we could ship the goods in your prospects instantly and won't leave details about us if you'd like to.3.What must I do if I don't obtain my item? Or the product has some problem?Please touch us first, we will do our greatest to solver it, we wish to supply complete refund or resend it for you. We are sincere seller, so don't worry.4.How to do once I measure the scale is smaller than ordered?Usually the screw can be look smaller, If you utilize the unique rule to measure the screw, per chance it's going to have error, will probably be appearance smaller. The right solution to measure the screw is by means of vernier caliper.5.The stainless-steel fastener can be attracted via a magnet.Most people assume the stainless-steel can't be attracted by means of a magnet. But the chrome steel has many systems, some can’t be attracted by way of magnet, but some can. And the chrome steel could have just a little magnetic after it made to screw or other thing. If want the stainless-steel can't be attracted by a magnet, Demagnetization is required. The correct strategy to discern it's stainless-steel or no longer is useing spectroscopic instruments or potions.Please have faith us, we solely promote the tremendous stainless steel fastener.