American standard

Spool type	D in.	d in.	d1 in.	L in.	I in.	Wire type
2.125" Flange	2.125	1.375	5/8	1.375	1	0.0005 - 0.002
2.5" Flange	2.5	1.76	5/8	3,376	3	0.007 - 0.0031
3.15" Flange	3.15	1.97	5/8	3.15	2.52	0.002 - 0.0063
3.5" Flange	3.5	2.125	2.125	2.438	2.125
5" Flange	5	3	5/8	4.11	3.5	0.0035 - 0.113
6" Flange	6	3.5	5/8	4.11	3.5	0.005 - 0.0253
PT 4 Tapered	5.5 & 4.875	4.375 & 3.875	1	7.875	6.688	0.003 - 0.008
PT 10 Tapered	7.087 x 6.300	4.331 x 3.780	1	9	7.875	0.004 - 0.010
12" Reel	11.75	8	2	3.938	3.62
Anodized Band Spool	2.24	1.98	1.93	1.1	1	Bonding wire

Metric

Spool type	D mm	d mm	d1 mm	L mm	I mm	Wire size mm Ø	Normal net weight, kg
C 1/4	64	44	16	61	51	<0.030	0.05 - 0.25
C 1/2	64	44	16	86	76	0.030 - 0.099	0.5
B 1	75	40	16	120	100	0.1 - 0.199	1.0
B 2	90	40	16	120	100	0.20 - 0.25	2.0
B 4	120	50	16	120	100	0.26 - 0.50	4.0

Standard DIN spools

Spool type	D mm	d mm	d1 mm	L mm	I mm	Wire size mm Ø	Normal net weight, kg
DIN 50	50	32	11	50	38	0.015 - 0.04	0.10
DIN 63	63	40	11	63	49	0.015 - 0.04	0.20
DIN 80	80	50	16	80	64	0.05 - 0.099	0.75
DIN 100	100	63	16	100	80	0.10 - 0.50	1.5
DIN 125	125	80	16	125	100	0.15 - 0.80	3.0
DIN 160	160	100	22	160	128	0.25 - 0.71	5.0
DIN 200	200	125	36	200	160	0.4 - 0.81	10.0
DIN 250	250	160	36	200	160	0.4 - 1.5	20
DIN 355	355	225	36	200	162	1.0 - 3.0	40
SK 460	460	318	305	105	91	0.25 - 1.8	45

Steeger bobbins

Sizes D / d x I
40 / 30 x 26 mm
40 / 16 x 26 mm
40 / 25 x 26 mm