Abstract: An earth boring system includes a drill-out bit disposed at a distal end of a drill string. The drill-out bit includes blades. The system also includes a casing drill bit that has a drill bit body with a bottom profile. The bottom profile at least partially matches a profile of the blades of the drill-out bit. The drill-out bit is operable to drill through the casing drill bit.

Abstract: The present invention relates to an exercise bench attachment that is secured to a workout bench surface via a multi-stick backing. The exercise bench attachment assists with performing chest exercises. The attachment includes shoulder grooves or openings on either sides of a spinal cord supporting portion for accommodating shoulder blades of a user lying in a supine position with the bench attachment secured between the user's neck and back, and the bench surface. The shoulder openings enable free movement of shoulder blades when performing chest exercises of moving barbells, dumbbells, or weights away and towards the chest. The device includes a neck support for providing cushion to the neck of the user. The attachment supports the back and spine, but enhances clearance and space for the shoulder blades to enable the scapula to move unrestricted.

Abstract: The present invention relates to an exercise bench attachment that is secured to a workout bench surface via a multi-stick backing. The exercise bench attachment assists with performing chest exercises. The attachment includes shoulder grooves or openings on either sides of a spinal cord supporting portion for accommodating shoulder blades of a user lying in a supine position with the bench attachment secured between the user's neck and back, and the bench surface. The shoulder openings enable free movement of shoulder blades when performing chest exercises of moving barbells, dumbbells, or weights away and towards the chest. The device includes a neck support for providing cushion to the neck of the user. The attachment supports the back and spine, but enhances clearance and space for the shoulder blades to enable the scapula to move unrestricted.