This long Winch Bar is used in correlation with Cargo Winches.The 24″ Winch Bar is recommended for strap truck applications. The 28″ and the34″ Winch Bars are used on 1/4″ Grade 70 Transport Chain. The 38.5″ Winch Baris only used on 5/16″ Grade 70 Transport Chains. Refer to your car haulmanufacturer s manual for usage. Made of solid chrome-plated steel