Swing set anchors

[Paula71]

Does anyone know where or if I can buy anchors for a large playset (the two swings, see-saw, slide one.)

The anchors we got were rubbish and I can't find a contact for the company. I saw a swing set with plastic type anchors but as we were driving past I couldn't very well stop and say "I was nosying in your garden and couldn't help notice..."