Knockback

Knockback (KB) isn't an effect that causes direct damage, but one that, well...knocks stuff back. It also forces the target to go into hit recovery, regardless of how much damage was caused. This is great for a bowazon since it increases the range between her and her target, leaving it unable to retaliate because it's being knocked back and forced into hit recovery animations.

Unlike other non-elemental effects, KB generally can't be resisted — small monsters are always knocked back, medium monsters resist it 50% the time, and large monsters get knocked back 25% of the time — though act end bosses like Duriel and structures like lightning spires are immune. Uniques and champions are rarely knocked back and frozen targets can't be knocked back until the freezing wears off.

The chance of knockback is the same no matter how many KB items you have, so you only really need one.

Where can I get knockback?

Equipment:

Cleglaw's Pincer's chain gloves

Cliffkiller large siege bow

Giant Skull bone visage

Horadric Hit Power gloves [magic chain gloves/heavy bracers/vambraces + Ort rune + perfect sapphire + any jewel]

Howltusk great helm

Langer Briser arbalest

Windforce hydra bow

Sockets:

Nef rune, when socketed in weapon