I recently purchased the Trick retrofit driveshaft for my new DW 9002 double pedal. I was very pleased with the feel of the DW shaft. I have owned the Pearl Demon Drive and now the Demon Chain. I recently learned that Pearl licensed the u-joint design from Trick so that made me want to check out the retrofit. To make this short, it is incredible. I was hesitant because I thought it would be hard to improve on the feel of the factory shaft and that it would be a slight improvement at best. Noticing the difference in feel and power is instant and significant. If you are looking for a great improvement for your slave pedal it is worth the price. I have also owned the Tama Iron Cobra Powerglide and I can confidently say that this shaft would be a great upgrade to that great pedal.