Handlebar MountXL lightsAlloy 25.4mm(Lezyne - LED Alu Bar Mount 25.4mm)Easy tool-free fitting to 25.4 (standard MTB) handlebars . Move your Lezyne light easily between bikes by having an extra bracket. CNC machined Alloy hinged clamp with Composite Matrix cradle fitting. Includes two rubber sizing shims to grip and protect handlebars. Fits all Year 5 (2011) lights and year 6 - 8 (2012-14) models Mini XL, Power XL, Super XL, Deca and Mega Lights Handlebar MountXL lightsAlloy 31.8mm(Lezyne - LED Alu Bar Mount 31.8mm)Easy tool-free fitting to 31.8 (oversize) handlebars. Move your light easily between bikes by having an extra bracket. CNC machined Alloy hinged clamp with Composite Matrix cradle fitting. Includes two rubber sizing shims to grip and protect handlebars. Fits all Year 5 (2011) lights and year 6 - 8 (2012-14) models Mini XL, Power XL, Super XL, Deca and Mega Lights