Product Specifications Before You Buy, Please Double-Check the Wheel Hole Spacing. Welding Is Not Required [Important] [Light National Standard] 1.5inch Set 2 Fixed + 2 Brakes [Light National Standard] 1.5inch Universal [Light National Standard] 1.5inch Direction [Light National Standard] 1.5inch Brake [Light National Standard] 2inch Direction [Light National Standard] 2inch Universal [Light National Standard] 2inch Brake [Light National Standard] 1.5inch Set 2 Fixed + 20,000 [Light National Standard] 2inch Set 20,000+2 Brakes [Light National Standard] 1.5inch Set 20,000+2 Brakes [Light National Standard] 2inch Set 2 Fixed + 20,000 [Light National Standard] 2inch Set 2 Fixed + 2 Brakes [Heavy-Duty National Standard Model] 8-Inch Universal Brake 【Heavy-Duty National Standard】8-Inch Swivel Caster [Heavy-Duty National Standard Model] 4inch Set 2 Fixed + 20,000 [Heavy-Duty National Standard Model] 4inch Set 2 Fixed + 2 Brakes [Heavy-Duty National Standard Model] 4inch Set 20,000+2 Brakes [Heavy-Duty National Standard Model] 5inch Set 2 Fixed + 20,000 [Heavy-Duty National Standard Model] 5inch Set 2 Fixed + 2 Brakes [Heavy-Duty National Standard Model] 5inch Set 20,000+2 Brakes [Heavy-Duty National Standard Model] 6inch Set 2 Fixed + 20,000 [Heavy-Duty National Standard Model] 8inch Set 2 Fixed + 2 Brakes [Heavy-Duty National Standard Model] 8inch Set 20,000+2 Brakes [Heavy-Duty National Standard Model] 6inch Set 2 Fixed + 2 Brakes [Heavy-Duty National Standard Model] 6inch Set 20,000+2 Brakes [Heavy-Duty National Standard Model] 8inch Set 2 Fixed + 20,000 [Medium Thickened] 3inch Set 2 Fixed + 2 Brakes [Medium Thickened] 5inch Orientation [Medium Thickened] 3inch Orientation [Medium Thickened] 5inch Set 20,000+2 Brakes [Medium Thickened] 5inch Set 2 Fixed + 20,000 [Medium Thickened] 5inch Set 2 Fixed + 2 Brakes [Medium Thickened] 4inch Set 2 Fixed + 2 Brakes [Medium Thickened] 4inch Set 20,000+2 Brakes [Medium Thickened] 3inch Set 20,000+2 Brakes [Medium Thickened] 4inch Set 2 Fixed + 20,000 [Medium Thickened] 3inch Set 2 Fixed + 20,000 [Medium Thickened] 3inch Universal [Medium Thickened] 3inch Brake [Medium Thickened] 4inch Orientation [Medium Thickened] 4inch Universal [Medium Thickened] 4inch Brake [Medium Thickened] 5inch Universal [Medium Thickened] 5inch Brake [National Standard Medium Type] 3inch Universal [National Standard Medium Type] 3inch Directional [National Standard Medium Type] 3inch Universal Brake [National Standard Medium] 3inch Set 20,000+2 Brakes [National Standard Medium] 4inch Set 2 Fixed + 20,000 [National Standard Medium Type] 4inch Set 2 Fixed + 2 Brake [National Standard Medium] 4inch Set 20,000+2 Brakes [National Standard Medium Type] 4inch Directional [Heavy-Duty National Standard Model] 5-Inch Universal Brake [Heavy-Duty National Standard Model] 5inch Directional 【Heavy-Duty National Standard】5-Inch Swivel Caster [National Standard Medium] 5inch Set 20,000+2 Brakes [Heavy-Duty National Standard Model] 6inch Directional 【Heavy-Duty National Standard】6-Inch Swivel Caster [Heavy-Duty National Standard Model] 6-Inch Universal Brake [Heavy-Duty National Standard Model] 8inch Directional [Heavy-Duty National Standard Model] 4-Inch Universal Brake [National Standard Medium] 5inch Set 2 Fixed + 20,000 [Heavy-Duty National Standard Model] 4inch Directional 【Heavy-Duty National Standard】4-Inch Swivel Caster [National Standard Medium Type] 5inch Set 2 Fixed + 2 Brake [National Standard Medium Type] 4inch Universal [National Standard Medium Type] 4inch Universal Brake [National Standard Medium Type] 5inch Directional [National Standard Medium Type] 5inch Universal [National Standard Medium Type] 5inch Universal Brake [National Standard Medium] 3inch Set 2 Fixed + 20,000 [National Standard Medium Type] 3inch Set 2 Fixed + 2 Brake The Following Is the National Standard Medium-Sized Nylon Wheel Here Are the Heavy-Duty Medium-Sized Nylon Wheels The Following Is the National Standard Heavy-Duty Nylon Wheel [National Standard Medium Type] 2.5inch Directional [National Standard Medium Type] 2.5inch Universal [National Standard Medium Type] 2.5inch Universal Brake [National Standard Medium] 2.5inch Set 2 Fixed + 20,000 [National Standard Medium Type] 2.5inch Set 2 Fixed + 2 Brake [National Standard Medium] 2.5inch Set 20,000+2 Brakes