This small flat and lock washer kit is great to have handy around the home or workplace. This kit contains: (31) 1/4" split lock washers, (59) #10 flat washers, (15) 5/16" split lock washers, (12) 3/8" split lock washers, (22) 3/8" flat washers, (105) #10 split lock washers, (24) 5/16" flat washers, and (9) 5/16" flat washers.