Brumbies tighthead prop Ben Alexander is expecting a tough examination at scrum time when his side takes on the Stormers in Cape Town on Saturday.
The experienced Wallaby, who starts alongside Stephen Moore and Scott Sio at Newlands, will be looking for revenge after they lost 25-24 on May 9.
However, he knows it won't be easy against a physical Stormers pack.
"It's not one thing or the other it's a combination of quite a few things. They're very well drilled and they’re obviously very strong guys," said Alexander to sport24.co.za.
"You look at the size of quite a few of them and they're big blokes but they're also committing to it and doing a great job. Tactically, they're pretty sound as well so they're the complete scrum."
However, the 30-year-old believes that having played at Newlands just over a month ago is a positive for his side as they look to keep their season alive.
"Everyone knows what to expect – we've got a lot of guys that have finals experience. But, also, Newlands is a unique atmosphere and a unique stadium and we've got a lot of guys with recent experience of what that's like, so that helps," he said.
"We had a Test match like match last time we played them, which was an incredibly physical game, and we know this is going to be up a notch. It's exciting – a semi-final in South Africa – it's very exciting."