Basic Lead Block followed by Lead Counter

http://youtu.be/F4gTP9Cj3j0

This combination may be used to defend against a single punch (or grab) or it can be used to interrupt a combination by blocking the first punch and punching between his first and second punches.

Tricky and unpleasant if you are a bit off, when it works, it works very well indeed (uses the incoming force of the attacker against himself).

Without prejudice