🟢Set of 2 clock keys for winding clocks || 5 prong both odd and even numbers || Made of brass (A metallic alloy that is a good source of copper and zinc) || Universal application
🟢ODD Sizes: 3mm 1/8 in (3), 3.5mm 9/64 in (5), 4mm 5/32 in (7), 4.5mm (9), and 5mm 13/64 in (11)
🟢EVEN Sizes: 2.75mm 7/64 in (2), 3.25mm 1/8 in (4),3.75mm 5/16 in (6), 4.25mm 11/64 in (8), 4.75mm 3/16 in (10)
🟢These keys come with total 10 prongs (Each Key with 5 prong), so this is best item as master key for all your clock
🟢The numbers of key are starting from 2 to 11. Some extra larges key holes are not available in these keys.