Whoever intended platform Ball / Speedball technically puts him, with this swivel professional fit there.
Turns / resonates very quietly, almost smooth and light as a feather. Quick can be getasucht by the locking pin of the ball. Through the four holes allows the swivel to connect absolutely fixed to the platform.
When unpacking it, you could tell the weight that the Swivel no cheap product.
Super value for money!
Many Thanks