What is a drum kit? What composes drum kit? In this, will help you figure out what you need.

A drum kit, may sometime be called a drum set, a collection of drums and other percussion instruments, mostly cymbals, which set up in a way a drummer or player can be played by a single player with the use of drumsticks held on both hands, with feet operating the pedals, may it be a beater for the bass drum or a hi-hat cymbal controller. 

A standard modern kit (for a right-handed player), as used in popular music contains the following:

• A snare drum, mounted on a snare stand, placed between the player's knees and played with drum sticks
• A bass drum, played by a pedal operated by the right foot, which moves a felt-covered beater
• One or more toms, played with sticks or brushes (usually three toms: rack tom 1 and 2, and floor tom)
• A hi-hat (two cymbals mounted on a stand), played with the sticks, opened and closed with left foot pedal (it can also produce sound with the foot alone)
• One or more cymbals, mounted on stands, played with the sticks

The composition of a drum kit can be purchased separately or as a whole set, like the following:

Complete Drum Hardware Pack 6 Piece Set by Griffin

Snare Drum Stand by Griffin

Single Kick Bass Drum Pedal by Griffin

Deluxe Hi-Hat Stand by Griffin

Cymbal Boom Stand & Straight Cymbal Stand Combo (Pack of 2) by Griffin

Drum Throne Stand by Griffin