~ more compact trolley is 50% lighter than competitive trolleys, yet every bit as tough
~ Negotiates radius curves as tight as 7 to 10 inches
~ Made of highest quality rolled steel
~ Unique double row, ball bearing wheel design for greater wear capacity
~ Larger V-bars available for wider flange adjustment
~ Bearings prepacked with lifetime lubricant
~ Exclusive Dial-Fit collar quickly adapts trolley to wide range of beams and patented rails
~ Lifetime warranty