Check the listing for details. Zach white leather co. 1 1/2" Rope Edge Screw Back Concho. Condition: Used. Listed at 11.25 USD. The Zach White Leather Co. 1 1/2" Rope Edge Screw Back Concho CH134424 is a high-quality leather accessory designed for leathercraft enthusiasts. This concho features a unique rope edge design and is secured with screw backs for easy attachment to various leather projects. The Zach model ensures a durable and stylish addition to your leathercraft creations, making it a versatile and essential tool for any crafter looking to add a touch of sophistication to their projects.