Brand N/A Quantity 1 piece(s) per pack Color Black + red Material ABS Diameter 6.2cm Compatible Camera Models All Canon EF & EF-S lenses Functions Macro extension tube set includes 3 tubes of different lengths: 13mm 21mm and 31mm. Use them individually or in combinations. Main features include built-in gilded electric pins for great TTL and AF solid metal construction elegant design sturdy & durable and compatibility with a wide range of lenses Other Features Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance; Useful for macro photography enable you to convert almost an lens into a macro lens at a fraction of the cost while maintaining its original optical quality Packing List 1 x Macro extension tube set 1 x English user manual