3 Arm Hone Kit 100 240 320 Grit in Box

4" Engine Cylinder Hone 3 Blade 2-1/4" to 7" bore range includes replaceable 100, 240, and 320 Grit Stones on extra arms New design allows easy grit changing by swapping the stone mounted hone arms by removing the tensioner screw Hone designed to expand from 2-1/4" Diameter Bore to 7" Diameter Bores - Stones are 4" long x 5/8" wide (larger than most) Flexible shaft improves tool centering and alignment 3 Blade Stone Hone 100, 240, 320 grit Aluminum Oxide Stones Protective Collar prevents stone breakage and controls force of tool on cylinder walls. Set comes in foam storage box