DPAccessories CC-4D-P-OBK05020 20 New Black Plastic Wheel Lug Nut Caps - Replaces GM 15646250 / Dorman 99956 Wheel Lug Nut Cap FOR USE ON: GM factory style dual thread lug nuts with a 22mm or 7/8" hex. These caps do not secure hub caps to wheels. REPLACES: GM 15646250 and Dorman 99956 / 711-025 / 611-607 / 99956.1 / 611-607.1 MATCHING LUG NUTS: Dual thread wheel lug nuts also available. See DP-Accessories LOC2D8CZOGD05020. SPECS: 1.57" (39.88mm) long - 1.45" (36.83mm) wide - 7/8" (22mm) hex - M27x2.0 thread INCLUDES: 20 new black plastic wheel lug nut caps shipped in our signature premium packaging.