Model 4122 : Adjusts from 53 in. to 8 ft (140 to 240cm)
Model 4132 : Adjust from 38 in. to 8 ft (100 to 240cm) Model 4152 : Adjusts 54 in. to 12 ft (140 to 370cm) 3/4″ (19mm) Acme Thread Extra Thick Neck & Body add to durability"*" indicates required fields