Stem Casters Aozel Heavy Duty Swivel Threaded Stem Caster Wheels with American Size 1/2''-13x1'' Thread Dual Locking Wheel with Brakes Pack of 4 (5 Inch): Industrial & Scientific

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See more product details Specifications: Item: Stem CastersMaterial: PVC Size: 3 InchBrake Type: 4 casters with Locking BrakeCAPACITY: 300lbs each. 900lbs per pack; Weight: 1.36lbs (620g) /per casterLength of the Caster: 135mm/5.3'' Total height of the Caster: 135mm/5.3'' Installation height of the Caster: 110mm/4.3'' Width of the Caster: 60mm/2.36'' Wheel Diameter: 75mm/2.95'' Wheel Width: 31mm/1.20'' Standard American Size Threaded Diamater: 1/2''-13×25mm ; American Size Threaded Length: 25mm/1"; Features:-- PREMIUM quality & HEAVY DUTY stem casters;-- 360 Degree Swivel; -- Quiet running & Safe to floors;-- Dual Locking Brakes; -- Smooth & Silent & Sturdy; -- Easy to install & Convenient to use;The caster are UNC 1/2", NOT METRIC size! Thank you very much!The caster are UNC 1/2", NOT METRIC size! Thank you very much! US 1/2''-13 Large diamater limit range is 0.4876''-0.4985'' (12.38mm-12.66mm)Metric M12 Large diamater limit range is 11.96mm-11.701mm. (As the International size chart in the picture shows)And when you measure the size of the stem, need to leave a little gap for accessory installation. So if you measure the stem size is >=12mm, it is US 1/2''! NOT METRIC M12. Since the Large diamater limit range of METRIC M12 is

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