Hammers in Low Pressure RAM Pack?

[Silicon]

Hello!

I had problems with my RAM, so I sent it back to wdp, and they sent me back Low Pressure RAM Pack. But there are two hammers in it. One same as the original and the other a little longer and thinner in the middle!!

Does anyone know what the difference between them, other than shape is? Which is better any why????

Thanks for answers

[chef-x]

Use the hammer that is the same as the previous one, The longer hammer is for use on a speed