SX-7 are punched for 4-1/2 Regular, 5 Race or 5 Slim, depending on size.SX-8 STRAIGHT HEART BAR QUARTER CLIPPED FRONT These bar shoes are fabricated using Kerckhaert shoes and a high grade insert. This shoe allows for the heartbar support without excess length behind. The SX-8 is used in a variety of disciplines and comes clipped. Front shape only. Shoes are symmetrical. SX-8 are creased and punched for City and Slim nails.