Kilter // Urban Plastix // Indoor Rock Gym Climbing Holds – Setter Closet Kilter award winning rock climbing holds for indoor climbing gyms, home walls and comps. Artistic grips for artificial climbing. Ian Powell, Jimmy Webb, Peter Juhl, Jeremy Ho, William Watkins, Dan Yagmin, Alex Puccio, Griffin Whiteside, Jackie Hueftle, Keith Dickey, Will Anglin, Haptic Design Studio, Urban Plastix.