Wilwood's C10 Iron ProSpindle Kits contain a pair of one piece spindles and integrated steering arms for 1971-1987 Chevrolet & GMC 2WD C10- C15 C1500 Pickup, Blazer, Tahoe, Yukon and Suburban. Specifically designed for use with Wilwood's disc brake kits and with a 2.50” drop without affecting steering geometry. Constructed from a proprietary grade of iron with a traditional bearing snout that supports Wilwood kit specific hubs in 5 x 4.75”, 5 x 5.00” or 6 x 5.50" wheel bolt circles. Spindles are sold in a pair (L/H & R/H) and can only be used with Wilwood Brake Kits