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Product variants: Apeks RK3 HD Dive Fins Hard Compound with Spring Straps
Product description: Apeks RK3 HD Dive Fins Hard Compound with Spring Straps
The Apeks RK3 HD is a reinforced version of the legendary RK3, engineered from a higher density (HD) material. By utilizing a hard thermoplastic rubber compound, these fins offer increased thrust and superior negative buoyancy. This is a critical feature for technical divers using drysuits, as it helps maintain perfect horizontal trim and counteracts positive buoyancy in the lower body and legs.
The design of the Apeks RK3 HD is based on the proven vented blade construction, which has been the gold standard for cave and wreck diving for decades. The hard blade responds instantly to every movement, which is essential for precise maneuvering in overhead environments. The vents eliminate resistance on the upstroke and maximize power on the downstroke, making them the ultimate choice for the frog kick and back kick techniques.
| Feature | Details |
|---|---|
| Material | High Density (HD) Hard Thermoplastic Rubber |
| Weight (per fin, size S) | 1.08 kg |
| Buoyancy | Negative (Sinking) |
| Strap Type | Stainless Steel Spring Straps with pull tab |
The RK3 HD fins feature heavy-duty spring straps, eliminating the need for buckle adjustments. To don the fin, slide your booted foot into the oversized pocket and pull the spring over your heel using the rubber tab. The foot pocket is specifically designed to accommodate heavy drysuit boots and Rockboots, ensuring a secure and stable fit.
Are Apeks RK3 HD fins suitable for recreational diving?
Absolutely. While they have a technical heritage, they are favored by recreational divers for their exceptional trim control and ease of use. The spring straps make donning/doffing on a boat effortless, and their maneuverability helps prevent accidental contact with the reef.
What is the difference between standard RK3 and RK3 HD?
The HD version is made from a harder, denser compound, making it heavier and stiffer. Standard RK3s are lighter and more flexible, while the HD version is designed for divers needing more leg weight to improve their horizontal trim.
| Size | Shoe Size (EU) |
|---|---|
| Small (S) | 36 - 38 |
| Medium (M) | 39 - 41 |
| Large (L) | 42 - 44 |
| XL/Super | 45 - 48 |
Technical Parameters: Apeks RK3 HD Dive Fins Hard Compound with Spring Straps
| Parameter | Value |
|---|---|
| Color | black/grey/orange |
| Size | L/M/S/XL |
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Extreme Divers
Aleja Kraśnicka 148
20-718 Lublin
NIP: 922-11-10-186
REGON: 061466975
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