Fit between tandem tires, it locks wheels by applying force to both tires. Aids in trailer stabilizing and prevents tire shifts. A hand-operated plated ratchet wrench (Model 841025, included) turns a drive nut, extending the chocks against the tires for locking and retracting the chucks for removal. Requires 2-1/2″ clearance between tires. Opens to 10″. U.S. Patent D347821.
WARNING: Do not use a cordless drill or cordless impact to operate the product unless the drill has an adjustable chuck. If the product was supplied with a manual handle or ratchet, please use that to operate the product. This allows you to feel the resistance during operation. A cordless drill or impact will cause damage to the product unless the adjustable chuck is set appropriately. NEVER use a cordless impact on an electric motor with a manual override.
WARNING: Cancer & Reproductive Harm. www.P65Warnings.ca.gov