Trommel tuning key / Drum mounting tool (Motion drum key) Key benefits Durable construction: made from a robust alloy for long service life and reliable performance during repeated use. Precise fit: designed for a square internal diameter of approximately 55 mm (2.17 in), ensuring correct engagement with compatible drum fittings. Portable and convenient: lightweight and compact for easy transport in a gig bag, drum case, or toolkit. Safe and comfortable to use: smooth, rounded edges prevent hand irritation or cuts during tuning and assembly. What it does Serves as a drum tuning key and a drum-mounting tool for assembling, tightening, and adjusting drum hardware. Provides secure engagement with square-drive fittings of the specified size to reduce slipping and make adjustments faster and more accurate. Compatibility and specifications Compatible with square internal fittings approximately 55 mm (2.17 in) in diameter. Material: alloy construction for durability. Function: drum tuning key / drum mounting tool (Motion drum key). Practical use scenarios Rehearsals and gigs: quickly retune or tighten lugs and mounts between songs when time is limited. Setup and breakdown: install or remove drum hardware and mounts while setting up a kit for performance or packing down after a show. Maintenance and repair: adjust tension rods, replace parts, or carry out routine maintenance in the practice room or studio. What to expect A simple, reliable hand tool built for regular use with drum hardware that matches the specified square internal diameter. Easy handling and reduced hand fatigue because of its lightweight design and smooth edges. Note: Check your drum hardware to confirm a square internal diameter of approximately 55 mm (2.17 in) before purchase to ensure compatibility.