Putco Boss Nerf Bar, Wheel to Wheel 44188 4 inch diameter Heavy Duty NeveRust Stainless Steel with a mirror finish;Available in cab length, wheel-to-wheel, and wheel-to-wheel with dually kick out;Non-skid aggressive tread pad CHEVROLET GMC SIERRA 1500 SILVERADO 1500 BASE CUSTOM DENALI HIGH COUNTRY LS LT LTZ SLE SLT SSV WT 2014 2015 2016 4.3L LV3 (262) Vortec 5.3L Ecotec3 L83 (325) 6.2L Ecotec3 L86 (376) FLEX GAS Putco Putco Boss Wheel To Wheel Nerf Bars (Stainless Steel) - 44188 44188 Nerf/Step Bar Wheel to Wheel