Selkirk DSP6IWT Insulated Wall Thimble, 6" Other Knives Auto shutdown technology cuts power

Auto shutdown technology cuts power in the event of a major surge

Flap Open: 5-1/4" x 7-1/2"

A magnified measuring system with an adjustable measuring scale allows accurate setup with any bit

"GENERAL TOOLS" PRECISION OILER

Rust-resistant blades

Selkirk DSP6IWT Insulated Wall Thimble, 6" Other Knives Auto shutdown technology cuts powerHighlights: Size: 6" Installs quickly and eliminates need for using individual firestops Round shielding acts as a radiation shield and provides the required 2" air space clearance to combustibles The 2 sections telescope to accommodate 6" to 11" wall thickness The hole opening in the wall for No. 206463 is 8. 25"; for No. 207463 9. 25"; and No. 208463 10. 25"