10Pcs 2*13mm Plastic Pulley Wheel 1.9mm Hole for 2mm Motor Shaft Model Pulley  Toy Accessories for DIY Car  F17653 

2 * 13mm plastic pulley, drive pulley can do both, you can do a small wheel, with a tight aperture is 1.9mm 2mm motor shaft, is also very suitable for loading into the motor shaft diameter 2mm
 
Inside Hole : 1.9mm (For 2mm shaft)
Out Diameter : 13mm
Package include : 10 pcs pulley 
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