Round bottom flask two necks

high boro 3.3 glass furnace or glass tubing made directly. uniform,including all sizes

Capacity(ml)	Middle ground mouth	Side ground mouth	Height(mm)
100	19/26	14/23	106
100	24/29	14/23	109
250	19/26	14/23	134
250	24/29	14/23	139
250	24/29	19/26	139
250	29/32	14/23	145
250	29/32	19/26	145
500	19/26	14/23	158
500	24/29	14/23	161
500	24/29	19/26	161
500	29/32	14/23	167
500	29/32	19/26	167
1000	24/29	14/23	196
1000	24/29	19/26	196
1000	24/29	24/29	196
1000	29/32	14/23	200
1000	29/32	19/26	200
1000	29/32	24/29	200
2000	24/29	19/26	231
2000	24/29	24/29	231
2000	29/32	19/26	234
2000	29/32	24/29	234

Round bottom flask two necks