This is a perfectly balanced tool for starting a "run" of scored glass. The CRL Glass Tapper is a 3/4" (19 mm) solid brass ball attached to a long brass ferrule. This ferrule is then bonded onto a high-grade hickory handle resulting in a 9" (229 mm) tapper. Well balanced and weighted for easy use, time after time. It will fit in a glass cutter pouch, such as the CRL S5403.