The combination RA/FG Block is a great technique organizer when a combination of RA and FG instruments are needed. The dual-compartment design provides more space and height for latch-type, RA (right or contra angle) polishing mandrels, rubber points, latch type brushes and stones, etc... and the FG side will keep shorter high-speed diamonds or burs in place. This RA/FG combination block holds up to 8 RA, and up to 9 FG rotary instruments.