3 inch Swivel Stem Caster Wheels w Heavy Duty 5/16"-18UNC Threaded Stem,Silent Non-marring Polyurethane Castosr,Set of 5(3 Castors with Safety Dual Brakes,2 No Brake),Fit Chairs,Carts,Shelf,Workbench

MALLLALA,3" office chair wheels with threaded stem 5/16" X 0.79"-18TPI coarse thread (US),the stud diameter is 5/16",the stud length is 0.79",no noise rubber wheel,protect floors from damage,heavy duty threaded stem caster replacement for office/desk/game chairs,set of 5(3 castors with safety dual brakes,2 castors no brake) Product Description: Encased with soft & durable Polyurethane,bracket made by 2mm thick industrial steel,double bearings structure,helped these parameter,our stem wheels transform your office chair into a stylish modern piece furniture in minutes.the chair with these swivel castors glide across any floor as smooth as silk and also quietly,they will not mark up your floors,so you no need to use chair mats any more.brake pedal mechanism,when applying the brake,keep these in place firmly and stably Product Specifications Item: Caster Wheel Color: Black Material: Polyurethane,Steel Model Numbe: 3" Wheel,5/16" X 0.79"-18 Stud Special Features: Set Of 5 Wheels?3 castors with safety dual brakes,2 castors no brake) Number Of Items: 5 Mounting Type: Threaeded Stem Load Capacity: 650 Pounds Wheel Diameter: 3 Inch Threaded Stud Diameter: 5/16" Threaded Stud Length: 0.79" Measurement System: English Included Components: 5 X 5/16”-18 Nuts,1 X Wrench Product Feature ?Silent & Smooth Rolling; ?Heavy Duty Capacity Load; ?No Damage To Floors; ?Easy To Install; ?Dual Brake Feature; ?Long Lifespan; Package Details( We Offer 4 Kinds Of Nuts For Your Option ) 5 X 3" caster Wheels(3 caster with brake,2 caster no brake) 5 X 5/16" Threaded Screw Inserts / Flanger Nuts / Nylon Nuts / Hex Nuts 1 X Wrench Note The Threaded Stem Is 5/16" * 0.79"-18, Its Measurement System Is English,Not Metric.