Selkirk 206463 Sure-Temp Insulated Wall Thimble, 6 inch Autumn_Cleaning you can adjust the drill

you can adjust the drill guide in 5 degree increments from 0-45 degrees

Latch engages and disengages by rotating round thumbturn

Blade width: 1"

giving you the option of adding even more border

Selkirk 206463 Sure-Temp Insulated Wall Thimble, 6 inch Autumn_Cleaning you can adjust the drillHighlights: Color : Black Material : Galvanized Steel Diameter : 6 inch Width : 6 inch Maximum Temperature : 2100 degree F Chimney Vent Type : Type A Number : 6T WT Vent Type : Type A Gauge : 22 Ga. UL Listed Assembled with the positive joint coupler, the safest and most secure locking system in the industry, ultra temp and galva temp chimney sections twist together with a 1 8 turn Engineered for safety, Selkirk, also known as metalbest or