25mm Heavy-Duty Spring Collar Set

Six industrial-grade spring collars rated for repeated use on 25 mm bars. Core spring: high-carbon steel with tempering treatment for fatigue resistance; handle: injection-moulded ABS with matte texture for slip resistance. Unit dimensions: 52 × 28 × 12 mm (L×W×H); weight per piece: 44–46 g. Spring force measured at 12.3 N ± 0.5 N — sufficient to retain up to 40 kg per side under static load, validated via third-party lab spot-checks. Surface finish is consistent and free of burrs or flash. Packaging is minimal, recyclable cardboard — reflecting UK consumer preference for low-waste, functional presentation. No batteries, tools, or additional components — pure utility-focused design.