#BM2350A Convertible boom stand with arm It has one telescopic section that includes a removable stud (1/4in-3/8in) that may be positioned straight,or at a 90o angle from the boom. The locking counterweight is 5kg. The boom supports of up to 4kg fully extended. The stand is the same as heavy-duty light stand #LS2600H but the maximum height is 1800mm. Boom tube : 25mm/30mm stand tube : 30mm/35mm stand leg tube : 22mm maximum height: : 1800mm maximum length : 2350mm weight : 9.5kg