This product is a fine quality 304 stainless steel hex socket heads cap screws bolts nuts wsashers kit, it also provides three free relevant wrenches in its set. They can satisfy your work needs. Specifications: Screws Type: Hex Socket Head Cap Screws Size: M2 M-3 M-4 (Include M2 M-3 M-4) Material: 304 Stainless Steel Quantity: 1080PCS M2 Hex wrench 1.5mm Size: 1645mm M3 Hex wrench 2.5mm Size: 1955mm M4 Hex wrench 3.0mm Size: 23*57mm 20pcs M2 * 5/32" Screws 20pcs M2 * 1/4" Screws 20pcs M2 * 5/16" Screws 20pcs M2 * 29/64" Screws 20pcs M2 * 5/8" Screws 20pcs M2 * 25/32" Screws 120pcs M2 Nuts 120pcs M2 Washers 20pcs M-3 * 5/32" Screws 20pcs M-3 * 5/16" Screws 20pcs M-3 * 29/64" Screws 20pcs M-3 * 5/8" Screws 20pcs M-3 * 25/32" Screws 20pcs M-3 * 19/16" Screws 120pcs M-3 Nuts 120pcs M-3 Washers 20pcs M-4 * 1/4" Screws 20pcs M-4 * 3/8" Screws 20pcs M-4 * 9/16" Screws 20pcs M-4 * 23/32" Screws 20pcs M-4 * 25/32" Screws 20pcs M-4 * 19/16" Screws 120pcs M-4 Nuts 120pcs M-4 Washers Package