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A rim mount is a 
Most commonly used for
drum kit
A drum kit (also called a drum set, trap set, or simply drums) is a collection of drums, cymbals, and other auxiliary percussion instruments set up to be played by one person. The player (drummer) typically holds a pair of matching drumsticks ...
accessory that allows a drum to be supported without any contact to its shell. The rim mount attaches instead to the drum rim or hoop.
Most commonly used for hanging tom
A tom drum is a cylindrical drum with no Rattle (percussion beater), snares, named from the Anglo-Indian and Sinhala language. It was added to the drum kit in the early part of the 20th century. Most toms range in size between in diameter, tho ...
s, they are also available for floor tom
A floor tom or low tom is a double-headed tom-tom drum which usually stands on the floor on three legs. However, they can also be attached to a cymbal stand with a drum clamp, or supported by a rim mount. It is a cylindrical drum without snare ...
s, and more rarely for bass drums and snare drums. Hanging tom and snare drum rim mounts use a standard hanging tom mount, but attached to the rim mount rather than directly to the drum. Bass drum rim mounts use special-purpose clamps to attach to a drum rack
Drum hardware refers to the parts of a drum or drum kit that are used to tension, position, and otherwise support the instruments themselves.
Occasionally, the hardware is used percussively as well, the most common example being a rim shot. John ...
. Floor tom rim mounts may be attached to a rack, or provide places for the three traditional floor tom feet to attach.
Bulkier and heavier than traditional mounts, they generally require drum cases one size larger.
History
The earliest rim mounts were developed by Gary Gauger and first became available in 1980 as aftermarket accessories, under the registered name '' RIMS'', standing for '' Resonance Isolation Mounting System''. It was more than ten years before major manufacturers began to offer them as an extra cost option. These days they are offered by most major manufacturers, and common on high-end kits, particularly for high-volume situations.
External links
* http://www.gaugerpercussion.com/introX.html History of RIMS rim mount. Drum kit components Musical instrument parts and accessories {{Percussion-instrument-stub