Long lasting and good looking bolts in bike-friendly sizesStainless steel corrosion resistant materialAvailable options : Supplied as a pack of 4,Pack of 10 or pack of 100 Options:Pack Of 4 : M4 x 10 mm - An ideal replacement for bottle cage bolts on some speciality framesM5 x 12 mm - An ideal replacement for bottle cage bolts on many framesM6 x 16 mm - A useful size on some bikesPack Of 10 :High quality stainless steel boltsM6 x 12mm,M6 x 16mm,M5 x 20mm,M6 x 10mm,M6 x 25mm,M4 x 10mm,M5 x 10mm,M5 x 12mm and M5 x 16mmPack Of 100 : High quality stainless steel Workshop pack of 100 loose boltsM5 x 16mm,M5 x 20mm,M6 x 10mm,M6 x 16mm,M6 x 12mm,M5 x 12mm,M4 x 10mm,M5 x 10mm and M6 x 25mm