Application: for marble only. Connection: 1/2" shank or other size shank sizes Advantage: fast cutting, minimizes chipping, long life. Item no. Diameter ECB5M 5mm ECB12M 12mm ECB25M 25mm ECB32M 32mm ECB35M 35mm ECB38M 38mm ECB50M 50mm ECB64M 64mm ECB76M 76mm ECB100M 100mm ECB115M 115mm Electroplated anchor bit Application: granite, marble. Arbor: 3/8" or 1/4" shank, M14 thread. Fast cutting action, vacuum brazed for long life. Can be made according to drawings and samples.