Quad Spanner Another of Flints best-sellers brought in from Japan. These are probably the most popular tool found backstage. This reversible ratchet spanner fits M8, M10, M12, and Scaff, covering all the sizes normally found on stage. The usual superb Japanese tool quality ensures reliable long life. Stainless steel body. The most popular backstage spanner! Just one tool covers virtually every task. Reliable quality for a lifetime of use. Drilled for a lanyard.