A bondage device for whipping a slave's tits

Master has made a simplfied version of this using 2 scaffolding poles. Straps have been fixed to the upright and crosspiece to take my wrists and ankles and the vertical pole has been sunk into the concrete floor of the basement so that when I struggle there is no risk of it toppling. The advantage of this design rather than a cruciform one is that with my arms held back that way, my tits are presented perfectly for whipping - and they look bigger too!
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You'll see that the original device has another cross piece which lovely Sarah Jane Ceylon stands astride to which a large vibrator is attached. We decided to leave that out so that Master can fuck me after whipping me. Just thinking about His chest against my poor whipped tits is making me wobbly even now! Also, because we constructed it so that my feet could rest on the floor, I was a still little too high for Master to penetrate me easily. So He chipped away a couple of inches of the concrete floor for Him to stand in as He takes me.