If you are on a tight budget and do not give away the motors to your students after they build them you may disassemble the motors and reuse some parts. To make all the kits to look like new again you may need to replace some parts with this reuse kit which includes:

• Short axle 30 mm – 1
• Plastic washer – 2
• Super glue – 1
• Magnets – 4
• Magnet label – 1
• Brick 2×2 with center hole – 2
• Brick 1×2 with side holes – 1
• Cable tie – 3
• Spool of wire – 1
• Electromagnet core – 1

This is not a Lego® product even if it contains Lego® bricks and plates. We reserve the right to use other materials in the future. All warranties provided by Simple Motors.
LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this product.