SELKIRK Sure-Temp 8 In. Insulated Wall Thimble American Standard Diablo optimized tip design provides

Diablo optimized tip design provides fast plunge capabilities

Internal switch controls include both sensitivity (high-low) and delay (min/max)

prevents water from entering motor housing

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 Diablo optimized tip design providesInstalls 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.