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