Magnesium Jumbo Paver’s Groover – 8" x 8", 1-1/2" Bit, Threaded Handle Socket (CC859)Product description (put in the main description area, above the hidden HTML) Contractor grade Magnesium Jumbo Pavers Groover (CC853) for crisp, uniform joints in concrete and pavers. The 8" x 8" base with a 1 1 2" bit delivers deep, consistent grooves, while the threaded handle socket makes it easy to attach standard threaded poles for smooth walking control on flatwork. 8" x 8" magnesium base for durable, lightweight control 1 1 2" bit for deeper,