DFP230 is ideal for softer tones on xylophones, marimbas, and auxiliary percussion instruments such as woodblocks.. Length: 16 27/64" Head Size: 1.125 x 1.125". Designed specifically for usage in the classroom, these mallets are designed to be durable while also budget friendly. Features a 1 1/8" medium rubber head on a birch shaft. All Promark drumsticks are designed and manufactured in the USA to the most stringent quality controls in the industry. .