The basic setup for System Training: six of our System handholds and eight System footholds. Set them up on a standard 4 x 8 sheet for plywood in a mirrored grid pattern to isolate your training needs. We shaped these holds out of very mellow textured foam so your muscles give out first, not your skin. The System Handholds holds have a center bolt to rotate them to specific angles and they have a selection of different grips. The System Footholds have both flat and sloping side to demand more or less body tension during workouts. Bolts included.