Shop › Maslow 4.1 Idler Gear (Bag of 4) Image 1 of 2 Image 2 of 2 Maslow 4.1 Idler Gear (Bag of 4) $8.25 sold out Steel idler gears which connect the drive gear on the motor to the belt spool. Solid steel cast and CNC machined. Get notified by email when this product is in stock. Sold Out Added! Steel idler gears which connect the drive gear on the motor to the belt spool. Solid steel cast and CNC machined.