Size and quantity: M4x30mm (100pcs).
High quality material: Qrity self tapping screws are made of high quality 304 stainless steel.
Deep thread design: The screws with deep thread design provides good holding power in different woods and man-made materials, do not strip easily.
Safety and firm: The self drilling screws adopts high quality material, which is environmental protection and non-poisonous.
Wide application: Ideal tool for DIY, home and workplace, professionals, amateurs, woodworking, ship assembly and so on.