2 Inch Swivel Caster Wheels PP 360 Degree Threaded Stem Caster Wheel with Brake M8 x 15mm 66lb Capacity 4 Pcs 3/8x5/8x1/2" When it down pull it

When it down pull it off and stick on another disc

for BMW 340i xDrive 2016-2017

which means it has two terminals on each side and no polarity restrictions

Widely applied in like machinery

it sends signal via the red signal wire

2 Inch Swivel Caster Wheels PP 360 Degree Threaded Stem Caster Wheel with Brake M8 x 15mm 66lb Capacity 4 Pcs 3/8x5/8x1/2" When it down pull itDescription: * 2 Inch Swivel Caster Wheels PP 360 Degree Threaded Stem Caster Wheel with Brake M8 x 15mm 4 Pcs. * PP wheels offer the toughness and durability. Suitable for all floor types. * Perfect casters for small equipment and small space furniture including coffee table, plant stands, bookshelves, shoe bins, shopping carts, workbench. * Note: Each caster capacity is 30kg, total capacity for all 4 casters is 90kg (calculated by 3 casters ).