720 Piece Steel Assortment External & Internal Tooth Lock Washer Set Kit Organizer Red Hound Auto Deluxe 720-Piece Lock Washer Set External washers: #6(75) - #8(75) - #10(75) - 1/4"(60) - 5/16"(45) - 3/8"(30) Internal washers: #6(75) - #8(75) - #10(75) - 1/4"(60) - 5/16"(45) - 3/8" (30) Kit includes a wide assortment of external and internal lock washers Ideal for shop and home applications