Neewer Auto Focus Macro Extension Tube Set for Canon EOS DSLR SLR Lens, Extreme Close-Ups (Silver) (Metal Bayonet 13-21-31mm) Material: Metal Perfect coupling with TTL.AE Metering Use Individually or Combined This extension tube set is SUITABLE FOR CANON EOS DSLR/Film SLR/LENS Fits Canon EOS 1d, 1ds, Mark II, III, IV, 5D,Mark II, 7D, 10D, 20D, 30D, 40D, 50D, Digital Rebel xt, xti, xs, xsi, t1i, t2i, t4i, t5i 300D, 350D, 400D, 450D, 500D, 550D, 650D, 700D, 1000D