Interchangeable Magnetic Tie Bar With Ten Stainless Steel Covers | OneBarCo. INTERCHANGEABLE - Our interchangeable snap-in magnetic covers allow you to quickly customize your outfit and immediately make you stand out! PROVEN CONCEPT - Raised over $100,000 on Kickstarter and is now worn on ties in over 35 countries DESIGN - We worked tirelessly with our engineer to develop a design that is both unique and superior to other competitors. AFFORDABLE - Our main goal is to provide you with a tie bar collection that is affordable. Our prices paired with quality are second to none. AFFORDABLE - Our main goal is to provide you with a tie bar collection that is affordable. Our prices paired with quality are second to none.