size on the standard size stick

 

 

USA	UK	European	diameter(mm)
3.5	G	46	14.4
4	H	47	14.7
4.5	I	48	15.2
5	J	49	15.5
5.5	K	50	15.9
6	L	51	16.3
6.5	M	52	16.6
7	N	54	17.2
7.5	O	55	17.5
8	P	56	17.8
8.5	Q	58	18.3
9	R	59	18.6
9.5	S	60	19.1
10	T	62	19.5
10.5	U	63	19.9
11	V	64	20.3
11.5	W	65	20.7
12	X	66	21.2
12.5	Y	68	21.5