Lock 'N Load BK-101 Narrow Tire Adaptor  

 
Pictured in the photo of the BK-100 wheel chock, the BK-101 Narrow Tire Adapter consists of four pads that bolt to the cradle of the wheel chock. The narrow tire adapter is used with tires 3 1/2" and narrower. 

This is an upgrade optional item to be used with the BK-100 wheel chock (Sold Separately)