BAL Deluxe Silver Wheel Chock 28005 17-0275

Used between tandem tires to lock the tandem wheels by applying opposing force to the tires. A hand operated plated ratchet wrench turns a drive nut which extends the chocks against the tires for locking & retracts the chocks for easy removal (wrench included). Requires 2-1/2 inch of clearance between tires & opens to 10 inch.