WITSML - Bit Record Component Schema. Bit number and rerun number e.g. "4.1" for the first rerun of bit 4. Diameter of drilled hole. Minimum hole or tubing which bit will pass through (for bi-center bits). Diameter of pilot bit (for bi-center bits). Manufacturer / supplier of the item. Type of bit. Bit cost in local currency. IADC bit code. Condition of inner tooth rows (inner 2/3 of bit) (0-8). Condition of outer tooth rows (outer 1/3 of bit) (0-8). Overall dull condition from IADC bit wear 2 character codes. Row and cone numbers for items which need location information (e.g. Cracked Cone, Lost Cone etc). Condition of bit bearings (integer 0-8 or E, F, N or X)). Condition of bit gauge in 1/16 of an inch. I = in gauge, else number of 16ths out of gauge. Other comments on bit condition from IADC list (BitDullCode in standard list). Reason bit was pulled from IADC codes. Condition of inner tooth rows (inner 2/3 of bit) (0-8). Condition of outer tooth rows (outer 1/3 of bit) (0-8). Overall dull condition from IADC bit wear 2 character codes. Row and cone numbers for items which need location information (e.g. Cracked Cone, Lost Cone etc). Condition of bit bearings (integer 0-8 or E, F, N or X). Condition of bit gauge in 1/16 of a inch. I = in gauge, else number of 16ths out of gauge. Other comments on bit condition from IADC list (BitDullCode in Standard LISTS). Reason bit was pulled from IADC codes. Bit drive type (Motor, rotary table etc). N = new, U = used. A container element that can contain custom or user defined data elements.