Description: Lowering Block Kits are designed to lower the rear of your truck 3". All lowering blocks are built of Aluminum and come complete with 1/2" diameter U-bolts, washers and nuts. Block Measurements Width: 2.20" Length: 4.85" U Bolt Measurements Inner Width: 3.125" Overall Length: 9" Thread Length: 3.875" Application for: For 1983-1997 Nissan 720/Hardbody Package Include: 1× 3" Lowering Block Kit W/o Product Instruction Note: .