uxcell Carbon Brush Holder Caps 12mm O.D. 5.0mm I.D. 4.5mm Thickness Motor Brush Cover Plastic Fitting Thread Black 10pcs Country of Manufacture: CHINA; Material: Plastic Net Weight: 6g; Package Content: 10 x Carbon Brush Holder Caps Model: 12mm; Main Color: Black Outside Diameter: 12mm / 0.47"; Inside Diameter: 5.0mm / 0.20" Thickness: 4.5mm / 0.18"; Feature: Screw thread with slotted connector