Robust 12" Interior Curved Woodturning Tool Rest Exterior Interior Rest - 12" Wide - 1" Diameter - Long Post Robust Tool Rest are made from solid steel. Each Tool rest is topped with a hardened steel bar which will not nick, dent and will stay smooth after years of use. Fits Oneway 2436, 2416 | Powermatic 3520B, 3520A, 4224 | Robust AB25 | General 20" Lathes