This assortment contains 720 pieces for 6 popular sizes. Refill pieces are not available.

720 piece lock washer kit contains 6 popular sizes which are: (50) #6, (50) #8, (50) #10, (40) 1/4", (30) 5/16", (20) 3/8" lock washers; 

(50) #6,
(50) #8,
(50) #10,
(40) 1/4",
(30) 5/16",
(20) 3/8" outer star washers,
(50) #6,
(50) #8,
(50) #10,
(40) 1/4",
(30) 5/16",
(20) 3/8" inner star washers. Refill pieces are not available.