Bussmann DMM-B-11A fuse used in many popular late-model DMMs for the 10A current range. The arc-quenching sand filler and glass fiber-reinforced melamine tube gives it a high rupture capacity (HRC). It is rated at 1000V (AC or DC) and is capable of interrupting 20,000 amps.
I find it interesting that the zig-zag shaped element has separated into several pieces, no doubt by design. Fortunately it did its job and the multimeter and forgetful multimeter user it protected suffered no damage.