Quantum Slider Discs are at the core of the Quantum Shoe system. The discs are sold in sets of seven and are available with three different speed ratings.
Moderate speed, similar to 5/32" traditional slider. White Teflon.
Fast, similar to 1/4" traditional slider. White Teflon.
Very fast, outperforms any Teflon slider. Sainless steel.
Here's what Doug Flowers, President of Goldline Curling, has to say about the Speed 12 Quantum Sliding Discs:
If you have experience with a full slider of any type, don't be a afraid to give steel a try. It is definitely quick, however the Quantum is so stable that it is easy to get accustomed to. I curl in a competitive senior league with a number of accomplished senior curlers. The steel discs have given them their slide back, with no complaints of instability.