This items includes qty ONE screw. Shown in a grouping to display from various angles. Metric 4mm thread with .7 pitch. SHORT=6PLY ( this can vary lug to lug depending on the length of it's screw inserts - but this is a good guide point to start ),High quality drum lug mounting screws. These screws are NOT included with our lugs, since we offer many lengths for different shell thicknesses. SHOULD work with most shells close to 6ply 4mm or 3/16in thick.