Power Gym Roller J-Cups SQMIZE® SQ-S955-NJ 

Dumbbell Holders with Rollers – for noticeably greater comfort on your all-in-one rack stations. The new Roller J-Cups SQMIZE® SQ-S955-NJ are built to be uncompromisingly sturdy and fit the SQ-S755, SQ-S855, SQ-S955, SQ-S900, SQ-S981, and SQ-S660. 

Two hard rubber rollers provide support for your barbell, allowing it to roll smoothly to the left or right. This helps you find the exact starting position without having to lift or jerk the loaded barbell. In addition, built-in nylon pads protect your barbell’s finish every time you hook it in or out. 

Why Roller J-Cups? The Comfort Advantage in Detail 

Classic J-Cups hold the barbell firmly in one position. If it isn’t centered, you have to lift it and slide it to the side—a real drain on your strength when lifting heavy weights. The Roller J-Cups turn this principle on its head: The barbell rests on two hard rubber rollers and can be precisely centered with minimal effort. 

This gives you a clean start before every set. You roll the barbell into the perfect position, unhook it, and get started—without straining your shoulders or back just while setting it up. The energy you’d otherwise spend on positioning the bar is saved for your workout. 

The rolling principle also pays off when returning the bar: The barbell glides smoothly into the rest instead of slamming hard against metal. This protects both the equipment and your nerves—and operates noticeably more quietly. 

Barbell protection as standard 

High-performance coatings like Cerakote need to be protected. The SQMIZE® SQ-S955-NJ Roller J-Cups employ two measures to achieve this: The hard rubber rollers prevent metal-on-metal friction, and the built-in nylon pads (12 × 6.5 × 0.5 cm) cushion every contact point. This keeps the surface of your barbell flawless even after countless sets. 

Built for Rigorous Gym Use 

With a wall thickness of 5 to 8 mm and a 24 mm diameter locking pin, the Roller J-Cups are designed for continuous use. The solid construction securely holds even heavy barbells and retains its shape for years. 

Technical Specifications 

Feature                                    Value 

Length                                     18 cm 

Width                                       8.5 cm 

Height                                     22 cm 

Pin                                           Lock-pin mechanism 

Rollers                                     Hard rubber, Ø 40 mm, length 55 mm 

Wall thickness                        5–8 mm 

Nylon pads                             12 × 6.5 × 0.5 cm 

Weight                                    5 kg (pair) 

Compatible with                    All-in-One Rack stations SQ-S755 / -S855 / -S955 / -S900 / -S981 / -S660 

Your benefits at a glance 

• Precisely center the barbell using the rollers—without any heavy lifting 
• Significantly reduced effort when attaching and detaching 
• Double coating protection thanks to hard rubber rollers and nylon pads 
• Uncompromisingly sturdy construction with 5–8 mm wall thickness 
• Compatible with six All-in-One Rack Stations from SQMIZE®