Shop Walter Surface Technologies at BPS Supply Group. Our online selection includes zip wheels, flex flap discs and more. Walter Surface Technologies is a renowned brand specializing in high-performance surface treatment solutions for industrial applications. Their top-selling products include innovative abrasives, such as the Walter Zip Wheel and Walter Enduro-Flex Flap Discs, designed to provide exceptional cutting and finishing performance. These products stand out for their durability and efficiency, making them ideal choices for professionals across various industries seeking superior abrasive solutions to enhance productivity and quality in metalworking and surface preparation tasks.