Adjustable Heavy Duty Hose Support Arms support the hose for proper tension and maximum milking efficiency. Reverse bend keeps the cow from catching on it when entering/exiting the parlor. Type 304 machined stainless steel ball and arm assembly and side plates. Full 1/2" thick nylon wear pad. Support Arms weight 4.5 lbs. each. 22" with U-bolts for 1-1/2" tubing.