I have a lot of these 4" casters with a brake. These came off of computer desks in a school. The ball bearings work well allowing the wheel to change direction.
Forming by Section and Tube Bending and Forming by Press Brake, prepared by and published by International Textbook Co., Scranton, Penn., for the Bureau of Aeronautics, Department of the Navy, 1943.. Republished by Lindsay Publications, Bradley, IL, 2009. 5 1/2 x 8 1/2 softcover, 81 pages.
Alum-A-Pole Essential siding brake 10 ft. 6 in. Bending & Slitting Capability - will easily accommodate any and all materials of other manufacturers standard brakes.
This is a replacement air bag for many manufacturers rolling air jack / bridge jack. This is for jacks with 1 single main air bag in the center of the jack and is rated between 6-9k capacity depending on the jack. This is a 2 stage air spring that is made by continental rubber company.
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