The <b>PRO Axle Insert Guide </b>from Pinewood Pro helps you insert your axles into the pre-cut derby car axle slots on any wood derby car block. No need for extra tools or adjustments. Just hold the guide on your derby block by pressing your thumb into the small depression, insert your axle into the slot, then turn the block on its side and press down to slide the axle in.<br><br>Advantages<br><ul><li>Easily align pinewood derby axles in a precut slot and get perfect wheel spacing</li><li>Axle Guide rib is concave so your axles slide straight in</li><li>Thumb depression makes it easy to hold the Axle Guide in place<br></li><li>PRO Axle Insert Guide includes a built-in wheel spacer to give you perfect spacing so your wheels don't bind or wobble. Perfect spacing and straight insertion results in a faster car!<br></li><li>One piece construction with built in wheel spacer</li></ul><br>Designed and Engineered by the Pro's at Pinewood Pro, winning races for over 15 years.<br><br>Pinewood Pro's exclusive patent pending design is sure to help you easily insert your axles and get you on your way to the finish line. <br /> <br /> This product has been tested and passed appropriate CPSIA standards by an independent lab and has received a Children's Product Certificate (CPC). <br /><br /> <b>BUY AMERICAN!</b> Pinewood Pro is a US company that has supported the derby community for over 20 years. <br />