Specs: Speed Profile Boot Padded Collar Deluxe Memory Padding RTX 6000 Chassis with Fixed Toe Stop Mach 5 63mm x 35 mm wheels G-Force 608ZB Carbon Steel Bearings Details: The GTX 500 Adult Black and Pink Rink Skates are our best selling model for rink and recreational skating in the entire Pacer lineup. Secure fit with power strap snugs your foot into the comfortable speed profile boot. Lathed Mach 5 wheels with hub core and Bronze level bearing make skating effortless.