This versatile and convenient hole cutter enables the professional installer to cut variable size holes with speed, efficiency and minimal clean up. Perfect for cutting multiple speaker or recessed lighting holes, this tool will save you hours of installation time. Simply adjust the hole cutting blade to the desired hole size, mark the desired location of the hole and go to work. A built-in pilot bit enters the target material and centers the cutter in the desired position while the dust tray encloses the cutting arena. Capture the cutting debris as you cut-no more dust cloud with debris everywhere! The HC series Hole Cutter is available in two sizes: the HC10 for up to 10" holes (adjusts to cut holes from 1-1/4" to 10-1/4") and the HC12 for up to 12" holes (adjusts to cut holes from 1-1/4" to 12"). The Hole Cutter includes a fully adjustable cutting head assembly with four different counter balance weights of various sizes to limit vibration. The depth of the cut is fully adjustable using a spring and securing nut (included). The tray is built from durable clear polycarbonate plastic and will last for years with proper use. The HC series also includes an additional cutting blade, adjusting bar and wrench. All items come in a handy storage case. Product Notes Included in the case is an extra standard blade, four counter weights, adjusting wrench, and hex wrench. Recommended for use with a minimum 18 volt drill. Product Hi-Lite Now available in 12" size! Special Features: Saves Time in Cutting and Clean-up Great for Speaker Installations Easy Assembly