Comparison : Item # 4015-08, Flask, Round Bottom, Three Neck, Angled, GL Threaded
Item # 4015-09, Flask, Round Bottom, Three Neck, Angled, GL Threaded
Item # 4015-10, Flask, Round Bottom, Three Neck, Angled, GL Threaded
Item # 4015-12, Flask, Round Bottom, Three Neck, Angled, GL Threaded
Item # 4015-14, Flask, Round Bottom, Three Neck, Angled, GL Threaded