Classification: Mid-Range Disc
Diameter: 21.7cm
Weight Range: 150 class to 180 grams
Brief Description: The number one professional mid-range disc. It is very reliable at the high speeds that pros throw. It ages slowly, becoming an excellent slow turning disc as it wears.
Available Plastics:  DX, Classic, KC Pro, R-Pro, Star, Glow
Best Choice for: Experienced players utility disc, hyzer shots, anhyzer shots, turnover shots when worn, sidearm approaches.

About the Innova Bottom Stamp DX "Rancho" Roc
Still a Roc and still the best mid-range and arguably the best disc ever - just available in bottom Stamp which means there are no markings on the top of the disc - only on the bottom.

The term "Rancho Roc" comes from the location the disc was made - Rancho Cucamonga.  The Roc originally started out as the "San Marino Roc" (San Marino, CA) and was the first Roc with a 21.7 cm diameter.  Then Innova made a move and it became the "Ontario Roc".  The Ontario Roc has a higher dome and flips easier than the San Marino's. Because of this they were not very popular and they were replaced in 1997 by the current "Rancho" Roc, so named because Innova moved from Ontario to Rancho Cucamonga and the tooling once again changed. The Rancho Roc is the most overstable Roc yet, and has been hugely popular.

If you go to the store and buy a DX Roc or a KC Pro Roc, it is a Rancho mold. From most overstable to least overstable they go Rancho-San Marino-Ontario.