The package includes a single wheel coupled with a bearing.
3D Printer Parts - T2-T10 Lead Screw Lock Collar, Block Isolation Column Ring for Superior Locking Performance
$5.99 – $6.49
3D Printer 2GT Aluminum Synchronous Wheel 16/20 Teeth H-Type Pulley with 6/10mm Belt Width - Drive Idler
$5.99
Engraving Machine D-Type POM Bearing Pulley – Large Small Passive Idler V-Wheel
$5.99 – $6.49