SELKIRK Sure-Temp 8 In. Insulated Wall Thimble American Standard wear mark indicator indicating when

wear mark indicator indicating when the bit no longer meets ANSI diameter requirements

Not intended for pumping unprocessed household sewage or as a sewage ejector pump

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

No tools needed to change coin battery

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

SELKIRK Sure-Temp 8 In. Insulated Wall Thimble American Standard wear mark indicator indicating whenInstalls 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.