Spacers are 1-3/8" long to space the coil-over away from the rear axle. The SAE washers on the back side keep the coil-over from slipping over the bolt head. Check the box beside "Substitute aluminum washers" to get a kit with a pair of nice CNC machined aluminum washers.
Aluminum spacers are 1-3/8″ diameter on the large end of the taper.
Coilovers and axle brackets not included. Bolts (5/8-18 x 5”), washers, spacers, and nuts included. Hardware is zinc plated grade 5. Sold in pairs.