AR-PRO proudly offers high-quality replacement parts for your Jeep that meet or exceed OE standards for a great fit and reliable performance. This replacement Targa Top Mounting Knob is compatible with 07-17 Jeep Wrangler JK / JKU models equipped with the factory hardtop. Our knob screws perfectly replace the OE 1CJ57DX9AD, 1CJ57DX9AC, 1CJ57DX9AD, 99172, 1CJ57DX9. Please note this replacement does not fit the 2018 JL series. Accessories like this are easy to get worn out or simply dislocated, it’s always good to have a spear pair on hand for the raining days even if the original ones are still working. Made from heavy duty plastic and metal, our knob screws are bult for compatibility and built to last. It’s our job to make dependable and durable automobile accessories and we do it right! Count on AR-PRO! IMPORTANT NOTE: This replacement kit is an aftermarket product produced by CalPalmy (TM). It meets or exceeds the performance of OEM replacements (based on in-house testing). We do not have any affiliation with or endorsement from any of the manufacturers mentioned. AR-PRO proudly offers high-quality replacement parts for your Jeep that meet or exceed OE standards for a great fit and reliable performance. This replacement Targa Top Mounting Knob fits 07-17 Jeep Wrangler JK / JKU models equipped with the factory hardtop. Our knob screws perfectly replace the OE 1CJ57DX9AD, 1CJ57DX9AC, 1CJ57DX9AD, 99172, 1CJ57DX9. Please note this replacement does not fit the 2018 JL series. Accessories like this are easy to get worn out or simply dislocated, it’s always good to have a spear pair on hand for the raining days even if the original ones are still working. Made from heavy duty plastic and metal, our knob screws are bult for compatibility and built to last. It’s our job to make dependable and durable automobile accessories and we do it right! Count on AR-PRO! U.S BASED CUSTOMER SERVICE: Not happy with your purchase for any reason? Not a problem, our 30 Days free return/exchange policy ensure you shop with peace of mind.