First2savvv XJPJ-CCW-15 golden Auto Focus Macro Extension Tube Set for Canon EOS DSLR SLR Lens, Extreme Close-Ups for Canon EOS 1DS Mark II 1DS III 1DX 7D II 5DS 750D 20D + blue Cleaning cloth Include: 1 x golden Macro Extension Tube + 1 X blue Cleaning cloth Designed to enable a lens to focus closer than its normal set minimum focusing distance. Magnifying your subject (making it appear larger in the viewfinder and in your pictures) Designed with all the circuitry and mechanical coupling,Lightweight design and durable, First2savvv lifetime Guarantee. Tubes can be used individually or in any combination to obtain the desired magnification