Red Real Vintage Leather Ukulele Mandolin Strap with Adjustable Length (Free Plectrums) This quality UK made strap is the ideal strap to compliment your ukulele or mandolin! The strap has a fully adjustable length The carefully chosen materials mean it doesn't cause much shoulder strain. Each purchase of these straps comes with six free complimentary guitar plectrums in differing widths. HOW TO: One end is connected to the strap button and the other end is unscrewed and fed under the strings at the machine heads and then the screw is re fitted.