SHARKK Set Of 36 Metal Stainless Steel Collar Stays 4 Size Options For Dress Shirts Set includes 24 stays in 4 different sizes to fit all your shirts. 4 Sizes In Length Included Are: 4 x 2.2" 8 x 2.5" 8 x 2.75" 4 x 3" Collar stays will keep your collar looking pristine and crisp all day. 430 Grade Nickel plated stainless steel. Smooth and fine finish along the edges. Although not recommended, these can go through the washing machine without getting rusty.