This refill is to replenish the kit ASST40SSCS188#. This stainess steel kit is critical for any repair or construction shop that comes across applications where highly corrosive-resistant nuts, washers and bolts are needed. This large metal bin includes Grade 18.8 stainless steel bolts in some of the most widely used lengths in the 1/4", 5/16", 3/8" and 1/2" diameters. Accompanying each bolt diameter are its matching Grade 18.8 stainless steel hex nuts, flat washers and lock washers. Product arrives separately to avoid bin damage. Bin arrives labeled. Images show complete layout. (Bin is not included.)