Žiedų dydžiai

Inside Diameter	Lietuva	UK, Europa	JAV (US)
14.1 mm	14	F	3
14.3 mm		F1/2
14.5 mm	14.5	G	3.5
14.7 mm		G1/2
14.9 mm		H	4
15.1 mm	15	H1/2
15.3 mm		I	4.5
15.5 mm	15.5	J
15.7 mm		J1/2	5
15.9 mm		K
16.1 mm	16	K1/2	5.5
16.3 mm		L
16.5 mm	16.5	L1/2	6
16.7 mm		M
16.9 mm		M1/2	6.5
17.1 mm	17	N
17.3 mm		N1/2	7
17.5 mm		O
17.7 mm	17.5	O1/2	7.5
17.9 mm		P
18.1 mm	18	P1/2	8
18.2 mm
18.3 mm		Q
18.5 mm	18.5	Q1/2	8.5
18.8 mm		R
19 mm	19	R1/2	9
19.2 mm		S
19.4 mm		S1/2	9.5
19.6 mm	19.5	T
19.8 mm		T1/2	10
20 mm	20	U
20.2 mm		U1/2	10.5
20.4 mm		V
20.6 mm	20.5	V1/2	11
20.8 mm		W
21 mm	21	W1/2	11.5
21.2 mm		X
21.4 mm		X1/2	12
21.6 mm	21.5	Y
21.8 mm		Z	12.5
22 mm	22	Z1/2
22.2 mm			13
22.4 mm		Z+1
22.6 mm	22.5		13.5