STM Disc Golf

Osiris

SMALL BRAND
Mid Range
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The Osiris is STM Disc Golf's midrange, rated 5/5/-1/1. The modest turn and fade figures suggest a workable flight with some drift and a gentle finish, a candidate for players seeking an approach disc without a strong fading finish. STM positions the mold for short drives, approaches and even putting. Its PDGA measurements include a 21.5 cm diameter and a 1.3 cm rim depth, useful dimensions to check if you are choosing between a midrange and a putter for approach shots. The manufacturer has offered it in VoltXplore plastic at 162–165 g.

The Osiris is STM Disc Golf's midrange, rated 5/5/-1/1. The modest turn and fade figures suggest a workable flight with some drift and a gentle finish, a candidate for players seeking an approach disc without a strong fading finish.

STM positions the mold for short drives, approaches and even putting. Its PDGA measurements include a 21.5 cm diameter and a 1.3 cm rim depth, useful dimensions to check if you are choosing between a midrange and a putter for approach shots. The manufacturer has offered it in VoltXplore plastic at 162–165 g.

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Flight

Source: STM Disc Golf

Arm speed

NoviceIntermediatePro
SpeedHow hard the disc must be thrown to fly as designed. Putters are 1 to 3, the fastest drivers 14 and up.
5
GlideHow long the disc stays in the air. More glide means more distance from the same throw.
5
TurnHow much it drifts right early in flight (right-handed backhand). More negative, more drift.
-1
FadeHow hard it hooks left as it slows down (right-handed backhand). Higher, stronger hook.
1
StabilityTurn plus fade. Negative drifts right and is easier for beginners. Positive finishes left.Turn + Fade
0

Dimensions

Source: PDGA
DiameterHow wide the disc is, edge to edge. Almost every disc is 21 to 22 cm.
21.5 cm
HeightHow tall the disc is lying flat. Putters are usually the tallest.
2.2 cm
Rim DepthHow deep the rim is underneath, where your fingers grip. Putters have the deepest rims.
1.3 cm
Rim ThicknessHow wide the rim is. Wider rims make faster discs that need a stronger throw.
1.3 cm
Rim Inside DiameterThe width of the flat middle, inside the rim. Bigger usually means a slower, easier disc.
18.9 cm
Rim Depth/Diameter RatioRim depth as a share of the disc's width. Higher means a deeper rim for its size.
6%
Rim ConfigurationA PDGA score for the shape of the edge. Low is sharp, like a driver. High is rounded, like a putter.
52.75
BeadA small ridge under the edge of the rim, mostly on putters. It changes how the disc feels in hand.
No

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