Bench-Mounted Holding Fixture Bench-Mounted Holding Fixture Here’s a helpful device that enables you to securely hold and rotate small engines, transmissions, and other components while you’re working on them.. This holding fixture will handle pieces weighing up to 250 lbs., and it offers 360° of rotation with positive stops at 90° increments.. Three sides of the mounted unit remain fully exposed. No. 7020 – Bench fixture. 7020 Yes - TITANIUM DIOXIDE (AIRBORNE, UNBOUND PARTICLES OF RESPIRABLE SIZE)