Columbus McKinnon - CM Hoists 3222 Series 632 Close Radius Push Trolley (1/4-Ton to 1/2-Ton Rated Capacity). With revolutionary advances, this shorter, 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. For low headroom applications. Bearings prepacked with lifetime lubricant. Exclusive Dial-Fit collar quickly adapts trolley to wide range of beams and patented rails. Dust covers shield and protect bearings. Trolleys available for larger beams, rails or tracks; contact CM. Cast iron trolley guards available (except for 3 ton). Lifetime warranty. Made in U.S.A.