We can produce and supply high quality masonry drill bits.

Standard: DIN 8039

Size as below,

6.0 ( 15/64 "); 6.5 ( 1/4"); 8.0 ( 5/16" );
9.0 ( 11/32" ); 10.0 ( 3/8" ); 11.0 ( 7/16" );
12.0 ( 15/32" ); 13.0 (1/2" ); 14.0 (9/16" );
15.0 (19/32" ); 16.0 ( 5/8 " ); 18.0 (22/32" );
19.0 (3/4"); 20.0 (25/32" ); 22.0 ( 7/8");
24.0 ( 15/16"); 25.0 ( 1" )

Overal length: 150mm; Or 200mm, or 300mm or 400mm