Rollers

[ahlam1399]

For the field, not lunging! ;-) Please tell me about them. I?ve always assumed they are solid metal but apparently you can get ones which you fill with water? I?m not convinced by the latter and need educating please! Which are best?

أكثر... (http://www.horseandhound.co.uk/forums/showthread.php?759528-Rollers&goto=newpost)