Product details:
Micrometer head assures accuracy in feeding. Expands quickly to cylinder size with fast action rack and pinion. Bottom guard plate helps prevent stones from accidentally hitting the crankshaft. joint action makes grinding of back cylinder easy. Clip-on stones and wipers are easily changed in a few 2nds. Stones are available in five grits. Use with heavy-duty 1/2" drill. Standard range 3" to 4 1/4". Big range (2 3/4" 10 1/4") with additional rack sets and stone sets. Long 5" stones cut faster, more accurately.
