4Pcs 2-inch Office Chair Casters Nylon Twin Wheel,Universal 11mmx22mm Stem Mount Swivel Caster Black Servo Extension Cable * Install Type: 11mm x

* Install Type: 11mm x 22mm Stem Mount

and install the screws

4 x 10 x 10mm / 0

internal hex drive

You'd better not directly connect it with the electronic instrument being tested

4Pcs 2-inch Office Chair Casters Nylon Twin Wheel,Universal 11mmx22mm Stem Mount Swivel Caster Black Servo Extension Cable * Install Type: 11mm xDescription: *2 Inch Office Chair Casters Nylon Twin Wheel,Threaded Stem Mount Swivel Caster Black. *Get smooth, quiet rolling and full swivel action, all while protecting your floors. *Made of Materials Available. prevent damage to carpets or slate floors. *Perfect as a set of replacement caster wheels for home or office chairs that have hard, noisy, rough plastic wheels. *Note: Each caster capacity is 17. 5kg, total capacity for all 4 casters is 52.