SELKIRK Sure-Temp 8 In. Insulated Wall Thimble American Standard Blades have increased durability due

Blades have increased durability due to POWER BLAST Technology and longer blade life and versatility due to T2 Technology

prevents water from entering motor housing

10" foam rubber flat free tires for long lasting maintenance free use

All-in-one design strengthens the bit from end-to-end in order to withstand the stress and impact of high-powered hammer drills in concrete

SELKIRK Sure-Temp 8 In. Insulated Wall Thimble American Standard Blades have increased durability dueInstalls quickly and eliminates the need for using individual firestops. The 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.