This is the Yukon Gear & Axle 1310 Spacer Lifetime U-Joint. This u-joint features a 1.718” snap ring span, with a 1.062” cap diameter. This u-joint is a great addition to your driveline, and will ensure for proper balance and operation. This u-joint has the inside snap ring design, and is crafted out of high grade materials that will provide your vehicle with a lifetime of performance.