This counter-rotational meta bond diamond is the #4 step in the process. The 501333-S is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on hard concrete.

This counter-rotational meta bond diamond is the #4 step in the process. The 501333-M is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on medium concrete.

This counter-rotational meta bond diamond is the #4 step in the process. The 501333-H is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on soft concrete.

This counter-rotational meta bond diamond is the #3 step in the process. The 501222-S is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on hard concrete.

This counter-rotational meta bond diamond is the #3 step in the process. The 501222-M is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on medium concrete.

This counter-rotational meta bond diamond is the #3 step in the process. The 501222-H is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on soft concrete.

This counter-rotational meta bond diamond is the #2 step in the process. The 501111-S is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on hard concrete.

This counter-rotational meta bond diamond is the #2 step in the process. The 501111-M is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on medium concrete.

This counter-rotational meta bond diamond is the #2 step in the process. The 5011111-H is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on soft concrete.

This counter-rotational metal bond diamond puck is an 80 Grit, 4 Seg. The 501080-MP is a metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on medium concrete.

This counter-rotational metal bond diamond wedge is a 70 Grit, 2 Seg. The 501070-HR is a right hand, metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on soft concrete.

This counter-rotational metal bond diamond wedge is a 70 Grit, 2 Seg. The 501070-HL is a left hand, metal bond diamond that fits all of National's counter-rotational grinders and is intended for use on soft concrete.