The Gibraltar L-Rod Ball 10.5mm Rod is heavy duty and hard wearing. The L-Rod has a hard 1.5 plastic ball that fits in any tom mounting system and in many other original tom mount systems. The 4 long L-rod is serrated and knurled adding grip to the mounts of toms or percussion instruments. 10.5mm in diameter most standard mounts fit over this whilst the finish compliments other chrome hardware.