Size: 1/8 ", 1/4", 3/8 ", 1/2"
Adjustment for the tube auty diameter: 4 mm 6 mm 8 mm 12 mm 12 mm 
Tips:
M5/0.8 "Thread ~ 4.9 mm 
01 = 1/8 "Thread 9.7 mm 
02 = 1/4 "thread ~ 122.7 mm 
03 = 3/8 "thread ~ 16 mm 
04 = 1/2 "thread ~ 20 mm 
Liquid type: air/vacuum operation 
Print: 0 ~ 10.2 kgf/cm2 (0 ~ 1.0 MPa) 
Number: -750 mmHg (10 torr) 
Operating temperature: 0 ℃ ~ 60 ℃ 
Rang: PU/Nylon, polyurethane quick adjustment 
Material: brass/plastic
Package: 1 PCs quick adjustment