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NA20001 Nils Extreme is a model of roller skates designed for freeride skating. The skates ensure the best possible maneuverability, precision of movement and stability when doing slaloms. Stable structure Their construction is based on a hard but lightweight, ventilated boot and a special one-piece aluminum reinforced skid. The skid is manufactured acc. to a special die-casting technology. Wheel and bearings High traction quality ensured by ABEC9 grade bearings. Soft wheels ensure good adhesion to the ground and they absorb all vibrations very well. Their specific configuration enhances the maneuverability of the roller skate. Two center wheels are larger than the two extreme wheels. This solution enables better control over the skating track. Fasteners The fastening mechanism is a double aluminum buckle with a tensioning mechanism and a lacing which makes the boot fits the user's foot perfectly. At the outside part of the boot there is a special slider, which is a common element used during a freeride skating. Specification: Skid: Aluminum, one-piece, die-cast Bearings: ABEC9 Boot: hard Wheels: 2 x PU 72mm/85A, 2 x 76mm/85A (size 35-39) 2 x PU 76mm/85A, 2 x 80mm/85A (size 40-44) Insole: Material: EVA Mesh high density foam Length of the foot (mm): 255 mm Snap: 2 x aluminum buckle with a tensioning element Lacing Remarks: Not intended for commercial use The product meets the standard PN-EN 13843:2009 Guarantee 24 months