This items includes qty ONE screw. Shown in a grouping to display from various angles. Metric 4mm thread with .7 pitch.X LONG=20PLY ( this can vary lug to lug depending on the length of it's screw inserts - but this is a good guide point to start y),High quality drum lug mounting screws with deluxe socket head.These screws are NOT included with our lugs, since we offer many lengths for different shell thicknesses. Includes lock and flast washers. SHOULD work with most shells close to 15mm or 5/8in thick. ( this can vary lug to lug depending on the length of it's screw inserts - but this is a good guide point to start )