Bones V4 STF Annuals Skateboard Wheels | 55mm 103A Filter Mask Features_Pressure Balancing and easily fits in a

and easily fits in a BC pocket when folded

and decreases wheel bite

Exclusive JBL Tru-Glide System

Compact LED dive torch offers separate strobe at one end

Chest mounted oral inflator

Bones V4 STF Annuals Skateboard Wheels | 55mm 103A Filter Mask Features_Pressure Balancing and easily fits in aBones wheels Street Tech Formula (STF) 55mm diameter 34mm width Treaded wheel surface V4 shape 83B 103A hardness The Bones V4 wheels are versatile and stable for all around skating. The 103A hardness is awesome for power slides without losing grip on slick surfaces. Plus, the specialty urethane resists flatspotting and lasts longer in the park.