Hitachi Power Tools 729404 Diamond Glass and Tile Bit

Reviews of Hitachi Power Tools 729404 Diamond Glass and Tile Bit

1.) Good drill, inaccurate size description
Reviewed by: L. Kennedy
Rating:
The Hitachi diamond drill is easy to use and is effective; I used it easily on porcelain tiles. The problem is: I bought a "5/8, 15 mm" drill. The "15 mm" was in fine print. This is a 15 mm drill bit, NOT a 5/8" drill bit. My calipers say that it will only make a 0.588" hole, which would be about right for 15 mm (15mm equals 0.594"). The difference compared to a true 5/8" drill bit of slightly more than 1/32" is significant - porcelain is a very unforgiving material. My experience proved my calipers to be correct, and that this is a 15 mm. drill bit "rounded" to 5/8". After using the "5/8" drill" to bore through the tile, I could not use my 5/8" concrete drill bits to finish the hole in the concrete block wall behind the tile without chipping and breaking the tile. In addition, nothing with a diameter of 5/8" would come close to going through the hole. The completion of the project required a lot of "freehand" enlarging of the hole, with very mixed success. All in all, a disappointing outcome for an otherwise good product.

Features of Hitachi Power Tools 729404 Diamond Glass and Tile Bit

Diamond grit drill bit will drill holes in glass, marble, class 5 porcelain, granite, slate, and ceramic tile. For best results, use with the Hitachi water attachment model No. 728019 for bits 3 16'' to 3 8'' or model No. 729400 for bits 1 2'' to 1''. No. 728020: 3 16'' No. 728022: 1 4'' No. 728024: 9 32'' No. 728026: 5 16'' No. 728028: 3 8'' No. 729402: 1 2'' No. 729404: 5 8'' No. 729406: 3 4'' No. 729408: 1'' No. 729410: 1 1 4'' No. 729412: 1 3 8''

1.) 5/8" diamond tile bit;
2.) Diamond grit drill bit will drill holes in glass, marble, class 5 porcelain, granite, slate, and ce;
3.) For best results, use with the Hitachi water attachment model No. 728019 for bits 3/16" to 3/8" or m;
4.) 5/8";

Package Height x Length x Width: 6.2 in. x 6.2 in. x 2 in.
Package Weight: 0.1 lbs.