1. Double hot shoe design: One is standard, compatible with all Canon flashes; the other is the mini one, only compatible with Canon 600EX/580EX II.
2. Those two hot shoes could support the E-TTL function, while only one of them is used.
3. The hot shoes and the cold foot are standard ones. Coiled from the cable with the straight length of 2.5m, the TTL cord is of high elasticity. It is suitable to be used off camera.
4. With 35mm king-size locking nut, it is easy to be fitted or removed. The PC sync port makes it more versatile. With a 1/4” screw port, it could be fitted on flash mounts.     

Coiled Length: Approx. 50cm
Uncoiled Length: Approx. 2.5m
Net Weight: Approx. 110g
Metering Supported: Canon E-TTL

Cameras:
EOS 1D/1Ds series, 7D/5D MarkII/5D, 60D/50D/40D/30D/20D/10D,
550D/500D/450D/400D/350D/300D
Speedlites:
600EX/580EX II/430EX II/270EX, 580EX/550EX/540EZ/430EX/420EZ/380EX/220EX

1 * 2.5m Dual-Shoe TTL Cord for Canon