The Skor thom (Khmer: ស្គរធំ) are Cambodian 2-headed barrel drums played with a pair of wooden drumsticks.
[1] They typically have skin heads made from oxen, cows or buffalos, and are played in pairs.
[2] The drums are tuned such that one will give a "tighter and louder" sound when struck, while the other gives a "loose and more flatter tone.
"[2] The log is hollowed out to form a thin tube, about 1 centimeter thick, and the hide is stretched out on each side to create the drum.
[2] Sometimes, the drummer will play a skor thom and a Samphor at the same time.