Quad Lock Replacement Bar Spacers Mirror Mount V2 The Quad Lock Replacement Bar Spacer mirror mount V2 are perfect for the Quad Lock Mirror Mount & Bar Clamp Small. Motorcycle Adapter Kit Specifications: Compatible with most handlebars. Included In The Box: 1x Spacer to fit handlebars 10mm (3/8 inches) 1x Spacer to fit handlebars 12mm (1/2 inches) 1x Spacer to fit handlebars 14mm (9/16 inches)