2 Inch Boring Head Set, R8 Shank – Precision Matthews Machinery Co.
Boring Head Combo Kit – smithy.com
BORING HEAD SET, OFFSET BOARING BAR, 8 PIECE SET | eBay
WUZSTAR Carbide Boring Head Tool Set Kit MT2-M10 F1-12 Boring Head 50mm+9pcs 12mm Boring Bar CNC Milling Tools Kit - Walmart.com
All Industrial 48106 | 9pc 3/4" to 3" Boring Depth Range 1/2" Shank Carbide Tipped Boring Bar Set with R8 Shank & 2" Boring Head - All Industrial Tool Supply