Wilmar Corp Metric Nut/Bolt Assortment - --/-- Includes metric bolts, nuts and washers from 4mm to 10mm diameter in lengths from 12mm to 40mm Includes an 8.25 in. x 4.25 in. x 1.25 in. resealable plastic case 10-M4 x 20M bolts 10-M4 x 12M bolts 20-M4 washers