Bulb condenser, acc. to Allihn, DURAN®, with 2 standard ground joints, JL 160 mmBulb condenser, acc. to Allihn, DURAN, with 2 standard ground joints, JL 160 mm Material: DURAN glass. With ground joints and two unscrewable plastic connectors ( 8,6 mm), GL 14 thread. Technical Information Cover length 160 mm Standard ground glass joint core 14 23 Standard ground glass joint sleeve 14 23 Number of balls 5 unit(s)