SRS #2456

Tools/Options: DRILL COLLARS: (6) 4-1/2" OD X 20' Collars, H90 Threads. Some are spiral. (1) 6" OD x 30' Bottom Hole Collar with 3F4R Float, 3-1/2" IF Threads on Top, 4-1/2" or 5-1/2" API Regular Threads on the Bottom, handles a 7-7/8" or larger Bit, also has (1) 6" OD X 30' Collar with matching threads (3-1/2" IF on both ends) that screws into Bottom Hole Collar