Quesport, other than talk with Dieckman. This fact sheet from Schuler Cue on Their shafts might help:
Schuler Carom Shafts
Ad Shaft Taper. Newly designed 3 cushion taper, identical to the constant tapper shaft except adding more comfort. 27.5" long x 11.75mm ferrule and tip diameter. Elforyn ferrule material. This shaft has a conical shape from joint to tip.
CONSTANT STANDARD TAPER SHAFT. Designed for 3 cushion. Most popular shaft for carom billiards. 27.5" long x 12mm ferrule and tip diameter. Elforyn ferrule material. This shaft has a conical shape from joint to tip.
European Taper grows quickly from ferrule, with even faster growth at midsection of the shaft. Flex point is forward, providing maximum"spine" without sacrificing comfort. Also known as the "Cuelemans" taper.
27.5 x 12mm Eflyron ferrule material Triangle tip.
Super Constant Shaft. The Super Constant Shaft is the strongest shaft Schuler makes. The shaft has an Eliptical shape, adding material in the middle of the shaft. Excellent for controling the cue ball on ultra fast carom tables.
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