Performance Plus Standard Size Square Lug Chrome Plated Drum Tuning Key (DKY) Industry Standard Drum Key- fits Most Drums with Square Lugs. High Quality Chrome Plated Steel Construction. Tuning All Drumheads (Snare Drums, Tom-Tom Drums and Bass Drums). Fits all 1/4 " Standard Socket Square Drum Key Tension Rods. All you need to tighten your heads perfectly.