【SPECIFICATIONS】 -- Product: ISPINNER 325pcs Backup Rivet Washers Assortment Kit -- Meterial: High Quality 304 Stainless Steel -- Quantity: 325pcs -- SIZE: 3/32" 1/8" 5/32" 3/16" 1/4" 【SPECIAL DESIGN】 Backup Rivet Washers are designed to be used with blind rivets, to provide additional support when tighening rivets in soft materials and other applications where it needs a larger diameter surface to prevent pulling out. They're perfect to deal with oversized or irregularly shaped holes. 【PACKAGE INCLUDED】 1/4"---------25pcs 3/16"--------100pcs 5/32"--------50pcs 1/8"---------100pcs 3/32"--------50pcs Total 325pcs packed in a sturdy transparent plastic case. 【WIDE APPLICATION】 These washers are suitable for indoor decoration, outdoor construction, electrical maintenance and furniture maintenance.