From the Kumu site:
This one-of-a-kind snare drum is made from cast steatite composite, which is a patented Finnish invention. Soundwise it’s between a wood and metal snare drum. This 5.5"x14" Pro 2 model has 2.3mm steel hoops and a P Classic throw-off with tube lugs.
Please call with any questions.
*All orders will require a signature at time of delivery unless discussed prior to delivery.