Evans '56 Calftone Snare/Tom Drumheads are made with a 7mil film base and blended with unique materials these heads are thinner than our bass 56' Calftone heads to help optimize the sound for smaller drums, higher tunings, and greater tonal response. The approach is identical to how natural skins are used across a drum set in which thinner skins are used up top and thicker skins are used down low for increased bass response. As a throwback to the year Evans was founded, Evans '56 calftone drumheads are for drummers looking for a vintage look and sound. These drumheads are a synthetic alternative to traditional calfskin and embody the calfskin look and sound but with the consistency, fit, and tuning range made standard with Level 360 Technology.