Rescue broken glassware-using diamonds. Save your glassware, recover beakers, and preserve your flasks with this handy industrial diamond file. Instead of tossing glassware because of a chip, now you can rescue it. Half round/half flat shape smoothes sharp and jagged edges‚Äîsaves money and the environment. Pays for itself in 30 days by making your glassware safe for use. Also may be used to score glass tubing. Nonskid, facetted handle is easy to hold. File diameter, 1/4 inch; file length, 4 inches; overall length, 8 inches.