IADC

113,114 115,117,127,137,214 215  216 227 237,314315 316 317 325 326 327 ,415 425 435 445,417 427 437,517 527 537,515 525,617 627 637,615 625,732,832

Bite size

3 1/2,3 7/8,4 1/2,5 1/2,6,6 1/2,7 1/2,8 1/2,8 3/4,9 1/2,9 5/8,

10 5/8,12 1/4,13 3/4,14 3/4,15 1/2,16,17 1/2,18 7/8.20.22.24.26

In

500mm-3000mm

Formation

clay,soft formation,medium and hard formation,sandstone

Seal

Rubber or medal

Package

Wooden box, as required