Trac-Grabber &ndash; Snow, Mud and Sand Tire Traction Device for Cars and Small SUVs &ndash; Set of 4 &ndash; A Chain / Snow Tire Alternative That Helps You Get Unstuck &ndash; Easy Install Blocks Strap To Your Vehicle Tires GET UNSTUCK WITH TRAC-GRABBER  quick, simple and effective devices for when your vehicle is stranded in difficult weather and terrain conditions. Includes set of 4 blocks and straps SNOW, MUD AND SAND  the Trac-Grabbers enhance the ability of a slipping tire to extract itself from a poor traction situation, taking you to stable terrain. Ideal for winter weather and emergency situations HOW TO USE  get unstuck and rescue yourself with this must-have vehicle recovery tool. Its straightforward to install, use the adjustable straps to attach the Trac Grabber block to each drive wheel VERSATILE  recommended for use on your two-wheel car, mini van, crossover SUV, ATV or UTV. Each block measures 8" (L) x 3" (W) x 1" (D); Strap Size 1.5" x 39" SERVES YOU FAITHFULLY  constructed using rugged and durable premium EPDM rubber. Reusable and super portable so you can take them anywhere with you, with no risk of harm to your tires Thoroughly inspect the wheel wells to make      sure your vehicle has sufficient clearance for the TRAC-GRABBERS and      STRAPS to make a full and unobstructed rotation.  Be sure to check      for clearance at your brake and suspension components as well. While getting unstuck, keep the front wheels      as straight as possible to reduce resistance. Be sure to physically remove any obvious      obstructions from ALL wheels that may create resistance and hinder your      vehicle from moving.  Help your TRAC-GRABBERS help you out! When installing TRAC-GRABBERS on your front      wheels, always keep the wheels as straight as possible.  With the      wheels turned, the clearance for the TRAC-GRABERS may be reduced. Stop and install your TRAC-GRABBERS at the      first signs of losing traction and before you dig deep holes and bottom      out. Once TRAC-GRABERS are installed, go in the      shortest and easiest direction back to stable terrain.  It is usually      back to where you came from.  TRAC-GRABBERS work just as well in      forward or reverse. Cinch your TRAC-GRABBERS down very tight so      they stay flush on your wheels while in use.  A loose TRAC-GRABBER      can flip over and become damaged. Always install a TRAC-GRABBER on each drive      wheel.  More than one on a wheel is not recommended. Take it Slow!  With TRAC-GRABERS      installed, apply just enough power to turn the wheels to the point where      the TRAC-GRABBERS become engaged.  Then apply just a little more      power to allow the TRAC-GRABBERS to slowly lift and start the vehicle      moving.  At that point you should back off of the power to avoid      rapid spinning and apply just enough power to keep your vehicle      moving.  Rapid spinning can cause damage to your TRAC-GRABBERS. During use, the TRAC-GRABBERS will shift      slightly on your wheels and the strap will become very tight.  It may      be necessary to manually force the TRAC-GRABBER back to its originally      installed position which will create slack in the strap and allow for easy      removal.