Gibraltar Bass Drum Head Port Hole Cutter
Item ID: SCGPHCUT
Now you can cut your own portholes into your own bass drum resonant head. Easily cut 4" & 6" port holes and protect it with Gibraltar's 4" & 6" protector rings (not included).
Warning: This product contains a chemical(s) that is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.