Feature●Sizes: 420 pcs stainless steel self tapping screws in 18 sizes: Wafer head: #8x (1/2, 5/8, 3/4, 1, 1-1/4, 1-1/2, 2"). Washer: #8x (1/2, 5/8, 3/4, 1, 1-1/4, 1-1/2) & #10x (1/2", 5/8", 3/4", 1", 1-1/4")●Material: Self drilling screws for metal are built with 410 stainless steel, which can easily penetrate into metal sheets. And it is comparatively stronger than 304 stainless steel, with superior stability & density●Types: Self tapping screws for plastic come with 2 different head types: Phillips wafer head & hex washer. Philips wafer head aids in fast installation, while washers provide strength & required stability●Versatility: Self tapping stainless steel screws are suitable for mechanical tasks & quick fixation of household or office items, & mostly applied on wood, and plastic material●Package: Wafer & hex head self tapping stainless steel screws set contain 420 pcs in a strong transparent box, with a tight lock, adjustable compartments, assorted sizes, and labelled accordingly, to easily find desired sizeDescription